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Finding the Fourth Proportional to 641,205.10, 961,807.65 and 616,710.70

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Solution

The fourth proportional to 641,205.10, 961,807.65 and 616,710.70 is: 925,066.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,205.10 : 961,807.65 = 616,710.70 : x
  2. Step 2: Convert to fraction form
    641,205.10/961,807.65 = 616,710.70/x
  3. Step 3: Cross multiply
    641,205.10x = 961,807.65 × 616,710.70
  4. Step 4: Simplify right side
    641,205.10x = 593,157,069,096.86
  5. Step 5: Solve for x
    x = 593,157,069,096.86/641,205.10
  6. Step 6: Final answer
    x = 925,066.05

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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.