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Finding the Fourth Proportional to 73,962.90, 102,079.44 and 42,134.76

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Solution

The fourth proportional to 73,962.90, 102,079.44 and 42,134.76 is: 58,152.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,962.90 : 102,079.44 = 42,134.76 : x
  2. Step 2: Convert to fraction form
    73,962.90/102,079.44 = 42,134.76/x
  3. Step 3: Cross multiply
    73,962.90x = 102,079.44 × 42,134.76
  4. Step 4: Simplify right side
    73,962.90x = 4,301,092,705.33
  5. Step 5: Solve for x
    x = 4,301,092,705.33/73,962.90
  6. Step 6: Final answer
    x = 58,152.03

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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.