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Finding the Fourth Proportional to 83,713.92, 125,570.88 and 21,384.42

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Solution

The fourth proportional to 83,713.92, 125,570.88 and 21,384.42 is: 32,076.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,713.92 : 125,570.88 = 21,384.42 : x
  2. Step 2: Convert to fraction form
    83,713.92/125,570.88 = 21,384.42/x
  3. Step 3: Cross multiply
    83,713.92x = 125,570.88 × 21,384.42
  4. Step 4: Simplify right side
    83,713.92x = 2,685,260,437.69
  5. Step 5: Solve for x
    x = 2,685,260,437.69/83,713.92
  6. Step 6: Final answer
    x = 32,076.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.