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Finding the Fourth Proportional to 207,631.20, 291,471 and 207,631.20

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Solution

The fourth proportional to 207,631.20, 291,471 and 207,631.20 is: 291,471

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,631.20 : 291,471 = 207,631.20 : x
  2. Step 2: Convert to fraction form
    207,631.20/291,471 = 207,631.20/x
  3. Step 3: Cross multiply
    207,631.20x = 291,471 × 207,631.20
  4. Step 4: Simplify right side
    207,631.20x = 60,518,473,495.20
  5. Step 5: Solve for x
    x = 60,518,473,495.20/207,631.20
  6. Step 6: Final answer
    x = 291,471

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.