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Finding the Fourth Proportional to 74,115.44, 102,253.92 and 42,261.44

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Solution

The fourth proportional to 74,115.44, 102,253.92 and 42,261.44 is: 58,306.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,115.44 : 102,253.92 = 42,261.44 : x
  2. Step 2: Convert to fraction form
    74,115.44/102,253.92 = 42,261.44/x
  3. Step 3: Cross multiply
    74,115.44x = 102,253.92 × 42,261.44
  4. Step 4: Simplify right side
    74,115.44x = 4,321,397,904.84
  5. Step 5: Solve for x
    x = 4,321,397,904.84/74,115.44
  6. Step 6: Final answer
    x = 58,306.31

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1.5x scale

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.