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Finding the Fourth Proportional to 86,925.65, 119,947.47 and 48,679.88

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Solution

The fourth proportional to 86,925.65, 119,947.47 and 48,679.88 is: 67,172.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,925.65 : 119,947.47 = 48,679.88 : x
  2. Step 2: Convert to fraction form
    86,925.65/119,947.47 = 48,679.88/x
  3. Step 3: Cross multiply
    86,925.65x = 119,947.47 × 48,679.88
  4. Step 4: Simplify right side
    86,925.65x = 5,839,028,445.90
  5. Step 5: Solve for x
    x = 5,839,028,445.90/86,925.65
  6. Step 6: Final answer
    x = 67,172.68

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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.