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Finding the Fourth Proportional to 669,018.96, 923,212.49 and 397,098.72

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Solution

The fourth proportional to 669,018.96, 923,212.49 and 397,098.72 is: 547,976.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,018.96 : 923,212.49 = 397,098.72 : x
  2. Step 2: Convert to fraction form
    669,018.96/923,212.49 = 397,098.72/x
  3. Step 3: Cross multiply
    669,018.96x = 923,212.49 × 397,098.72
  4. Step 4: Simplify right side
    669,018.96x = 366,606,496,081.52
  5. Step 5: Solve for x
    x = 366,606,496,081.52/669,018.96
  6. Step 6: Final answer
    x = 547,976.24

Related Problems

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Half scale
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Double scale
Find fourth proportional to 669,019.96, 923,213.86 and 397,099.72
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.