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Finding the Fourth Proportional to 1,061.49, 1,591.97 and 476.18

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Solution

The fourth proportional to 1,061.49, 1,591.97 and 476.18 is: 714.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,061.49 : 1,591.97 = 476.18 : x
  2. Step 2: Convert to fraction form
    1,061.49/1,591.97 = 476.18/x
  3. Step 3: Cross multiply
    1,061.49x = 1,591.97 × 476.18
  4. Step 4: Simplify right side
    1,061.49x = 758,053.93
  5. Step 5: Solve for x
    x = 758,053.93/1,061.49
  6. Step 6: Final answer
    x = 714.14

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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.