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Finding the Fourth Proportional to 669,014.71, 923,206.62 and 397,094.47

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Solution

The fourth proportional to 669,014.71, 923,206.62 and 397,094.47 is: 547,970.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,014.71 : 923,206.62 = 397,094.47 : x
  2. Step 2: Convert to fraction form
    669,014.71/923,206.62 = 397,094.47/x
  3. Step 3: Cross multiply
    669,014.71x = 923,206.62 × 397,094.47
  4. Step 4: Simplify right side
    669,014.71x = 366,600,243,469.39
  5. Step 5: Solve for x
    x = 366,600,243,469.39/669,014.71
  6. Step 6: Final answer
    x = 547,970.38

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Half scale
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Double scale
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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.