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Finding the Fourth Proportional to 100,956.44, 139,314.90 and 58,528.76

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Solution

The fourth proportional to 100,956.44, 139,314.90 and 58,528.76 is: 80,766.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,956.44 : 139,314.90 = 58,528.76 : x
  2. Step 2: Convert to fraction form
    100,956.44/139,314.90 = 58,528.76/x
  3. Step 3: Cross multiply
    100,956.44x = 139,314.90 × 58,528.76
  4. Step 4: Simplify right side
    100,956.44x = 8,153,928,346.52
  5. Step 5: Solve for x
    x = 8,153,928,346.52/100,956.44
  6. Step 6: Final answer
    x = 80,766.80

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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.