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Finding the Fourth Proportional to 1,153.92, 1,592.55 and 932.16

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Solution

The fourth proportional to 1,153.92, 1,592.55 and 932.16 is: 1,286.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153.92 : 1,592.55 = 932.16 : x
  2. Step 2: Convert to fraction form
    1,153.92/1,592.55 = 932.16/x
  3. Step 3: Cross multiply
    1,153.92x = 1,592.55 × 932.16
  4. Step 4: Simplify right side
    1,153.92x = 1,484,511.41
  5. Step 5: Solve for x
    x = 1,484,511.41/1,153.92
  6. Step 6: Final answer
    x = 1,286.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.