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Finding the Fourth Proportional to 74,464.12, 102,865.08 and 67,737.88

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Solution

The fourth proportional to 74,464.12, 102,865.08 and 67,737.88 is: 93,573.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,464.12 : 102,865.08 = 67,737.88 : x
  2. Step 2: Convert to fraction form
    74,464.12/102,865.08 = 67,737.88/x
  3. Step 3: Cross multiply
    74,464.12x = 102,865.08 × 67,737.88
  4. Step 4: Simplify right side
    74,464.12x = 6,967,862,445.23
  5. Step 5: Solve for x
    x = 6,967,862,445.23/74,464.12
  6. Step 6: Final answer
    x = 93,573.42

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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.