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Finding the Fourth Proportional to 66,731.94, 92,123.40 and 38,432.16

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Solution

The fourth proportional to 66,731.94, 92,123.40 and 38,432.16 is: 53,055.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,731.94 : 92,123.40 = 38,432.16 : x
  2. Step 2: Convert to fraction form
    66,731.94/92,123.40 = 38,432.16/x
  3. Step 3: Cross multiply
    66,731.94x = 92,123.40 × 38,432.16
  4. Step 4: Simplify right side
    66,731.94x = 3,540,501,248.54
  5. Step 5: Solve for x
    x = 3,540,501,248.54/66,731.94
  6. Step 6: Final answer
    x = 53,055.57

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