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Finding the Fourth Proportional to 100,960.60, 139,323.72 and 58,523.08

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Solution

The fourth proportional to 100,960.60, 139,323.72 and 58,523.08 is: 80,760.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,960.60 : 139,323.72 = 58,523.08 : x
  2. Step 2: Convert to fraction form
    100,960.60/139,323.72 = 58,523.08/x
  3. Step 3: Cross multiply
    100,960.60x = 139,323.72 × 58,523.08
  4. Step 4: Simplify right side
    100,960.60x = 8,153,653,211.46
  5. Step 5: Solve for x
    x = 8,153,653,211.46/100,960.60
  6. Step 6: Final answer
    x = 80,760.74

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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.