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Finding the Fourth Proportional to 615,404.70, 923,107.05 and 607,110.30

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Solution

The fourth proportional to 615,404.70, 923,107.05 and 607,110.30 is: 910,665.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,404.70 : 923,107.05 = 607,110.30 : x
  2. Step 2: Convert to fraction form
    615,404.70/923,107.05 = 607,110.30/x
  3. Step 3: Cross multiply
    615,404.70x = 923,107.05 × 607,110.30
  4. Step 4: Simplify right side
    615,404.70x = 560,427,798,057.62
  5. Step 5: Solve for x
    x = 560,427,798,057.62/615,404.70
  6. Step 6: Final answer
    x = 910,665.45

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.