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Finding the Fourth Proportional to 231,058.50, 318,860.76 and 125,074.50

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Solution

The fourth proportional to 231,058.50, 318,860.76 and 125,074.50 is: 172,602.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,058.50 : 318,860.76 = 125,074.50 : x
  2. Step 2: Convert to fraction form
    231,058.50/318,860.76 = 125,074.50/x
  3. Step 3: Cross multiply
    231,058.50x = 318,860.76 × 125,074.50
  4. Step 4: Simplify right side
    231,058.50x = 39,881,350,126.62
  5. Step 5: Solve for x
    x = 39,881,350,126.62/231,058.50
  6. Step 6: Final answer
    x = 172,602.83

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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.