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Finding the Fourth Proportional to 137,718.60, 206,577.90 and 58,986.60

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Solution

The fourth proportional to 137,718.60, 206,577.90 and 58,986.60 is: 88,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,718.60 : 206,577.90 = 58,986.60 : x
  2. Step 2: Convert to fraction form
    137,718.60/206,577.90 = 58,986.60/x
  3. Step 3: Cross multiply
    137,718.60x = 206,577.90 × 58,986.60
  4. Step 4: Simplify right side
    137,718.60x = 12,185,327,956.14
  5. Step 5: Solve for x
    x = 12,185,327,956.14/137,718.60
  6. Step 6: Final answer
    x = 88,479.90

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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.