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Finding the Fourth Proportional to 74,281.92, 102,434.40 and 44,491.20

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Solution

The fourth proportional to 74,281.92, 102,434.40 and 44,491.20 is: 61,353.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,281.92 : 102,434.40 = 44,491.20 : x
  2. Step 2: Convert to fraction form
    74,281.92/102,434.40 = 44,491.20/x
  3. Step 3: Cross multiply
    74,281.92x = 102,434.40 × 44,491.20
  4. Step 4: Simplify right side
    74,281.92x = 4,557,429,377.28
  5. Step 5: Solve for x
    x = 4,557,429,377.28/74,281.92
  6. Step 6: Final answer
    x = 61,353.14

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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.