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Finding the Fourth Proportional to 90,732.74, 125,224.80 and 65,323.22

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Solution

The fourth proportional to 90,732.74, 125,224.80 and 65,323.22 is: 90,155.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,732.74 : 125,224.80 = 65,323.22 : x
  2. Step 2: Convert to fraction form
    90,732.74/125,224.80 = 65,323.22/x
  3. Step 3: Cross multiply
    90,732.74x = 125,224.80 × 65,323.22
  4. Step 4: Simplify right side
    90,732.74x = 8,180,086,533.73
  5. Step 5: Solve for x
    x = 8,180,086,533.73/90,732.74
  6. Step 6: Final answer
    x = 90,155.85

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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.