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Finding the Fourth Proportional to 42,058.62, 63,079.02 and 15,765.30

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Solution

The fourth proportional to 42,058.62, 63,079.02 and 15,765.30 is: 23,644.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,058.62 : 63,079.02 = 15,765.30 : x
  2. Step 2: Convert to fraction form
    42,058.62/63,079.02 = 15,765.30/x
  3. Step 3: Cross multiply
    42,058.62x = 63,079.02 × 15,765.30
  4. Step 4: Simplify right side
    42,058.62x = 994,459,674.01
  5. Step 5: Solve for x
    x = 994,459,674.01/42,058.62
  6. Step 6: Final answer
    x = 23,644.61

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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.