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Finding the Fourth Proportional to 1,037.46, 1,432.17 and 664.94

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Solution

The fourth proportional to 1,037.46, 1,432.17 and 664.94 is: 917.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,037.46 : 1,432.17 = 664.94 : x
  2. Step 2: Convert to fraction form
    1,037.46/1,432.17 = 664.94/x
  3. Step 3: Cross multiply
    1,037.46x = 1,432.17 × 664.94
  4. Step 4: Simplify right side
    1,037.46x = 952,307.12
  5. Step 5: Solve for x
    x = 952,307.12/1,037.46
  6. Step 6: Final answer
    x = 917.92

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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.