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Finding the Fourth Proportional to 646,872.10, 970,308.15 and 366,936.10

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Solution

The fourth proportional to 646,872.10, 970,308.15 and 366,936.10 is: 550,404.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,872.10 : 970,308.15 = 366,936.10 : x
  2. Step 2: Convert to fraction form
    646,872.10/970,308.15 = 366,936.10/x
  3. Step 3: Cross multiply
    646,872.10x = 970,308.15 × 366,936.10
  4. Step 4: Simplify right side
    646,872.10x = 356,041,088,359.22
  5. Step 5: Solve for x
    x = 356,041,088,359.22/646,872.10
  6. Step 6: Final answer
    x = 550,404.15

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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.