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Finding the Fourth Proportional to 74,557.66, 102,895.50 and 42,729.52

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Solution

The fourth proportional to 74,557.66, 102,895.50 and 42,729.52 is: 58,970.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,557.66 : 102,895.50 = 42,729.52 : x
  2. Step 2: Convert to fraction form
    74,557.66/102,895.50 = 42,729.52/x
  3. Step 3: Cross multiply
    74,557.66x = 102,895.50 × 42,729.52
  4. Step 4: Simplify right side
    74,557.66x = 4,396,675,325.16
  5. Step 5: Solve for x
    x = 4,396,675,325.16/74,557.66
  6. Step 6: Final answer
    x = 58,970.14

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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.