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Finding the Fourth Proportional to 92,507.40, 138,720.06 and 42,575.40

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Solution

The fourth proportional to 92,507.40, 138,720.06 and 42,575.40 is: 63,844.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,507.40 : 138,720.06 = 42,575.40 : x
  2. Step 2: Convert to fraction form
    92,507.40/138,720.06 = 42,575.40/x
  3. Step 3: Cross multiply
    92,507.40x = 138,720.06 × 42,575.40
  4. Step 4: Simplify right side
    92,507.40x = 5,906,062,042.52
  5. Step 5: Solve for x
    x = 5,906,062,042.52/92,507.40
  6. Step 6: Final answer
    x = 63,844.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.