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Finding the Fourth Proportional to 669,017.96, 923,211.10 and 397,097.72

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Solution

The fourth proportional to 669,017.96, 923,211.10 and 397,097.72 is: 547,974.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,017.96 : 923,211.10 = 397,097.72 : x
  2. Step 2: Convert to fraction form
    669,017.96/923,211.10 = 397,097.72/x
  3. Step 3: Cross multiply
    669,017.96x = 923,211.10 × 397,097.72
  4. Step 4: Simplify right side
    669,017.96x = 366,605,022,888.69
  5. Step 5: Solve for x
    x = 366,605,022,888.69/669,017.96
  6. Step 6: Final answer
    x = 547,974.86

Related Problems

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Half scale
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Double scale
Find fourth proportional to 669,018.96, 923,212.48 and 397,098.72
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.