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Finding the Fourth Proportional to 58,432.92, 80,621.10 and 39,339.60

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Solution

The fourth proportional to 58,432.92, 80,621.10 and 39,339.60 is: 54,277.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,432.92 : 80,621.10 = 39,339.60 : x
  2. Step 2: Convert to fraction form
    58,432.92/80,621.10 = 39,339.60/x
  3. Step 3: Cross multiply
    58,432.92x = 80,621.10 × 39,339.60
  4. Step 4: Simplify right side
    58,432.92x = 3,171,601,825.56
  5. Step 5: Solve for x
    x = 3,171,601,825.56/58,432.92
  6. Step 6: Final answer
    x = 54,277.65

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1.5x scale

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.