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Finding the Fourth Proportional to 91,601.92, 126,347.56 and 64,435.64

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Solution

The fourth proportional to 91,601.92, 126,347.56 and 64,435.64 is: 88,876.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,601.92 : 126,347.56 = 64,435.64 : x
  2. Step 2: Convert to fraction form
    91,601.92/126,347.56 = 64,435.64/x
  3. Step 3: Cross multiply
    91,601.92x = 126,347.56 × 64,435.64
  4. Step 4: Simplify right side
    91,601.92x = 8,141,285,891.04
  5. Step 5: Solve for x
    x = 8,141,285,891.04/91,601.92
  6. Step 6: Final answer
    x = 88,876.80

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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.