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Finding the Fourth Proportional to 83,548.70, 125,323.05 and 79,660.70

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Solution

The fourth proportional to 83,548.70, 125,323.05 and 79,660.70 is: 119,491.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,548.70 : 125,323.05 = 79,660.70 : x
  2. Step 2: Convert to fraction form
    83,548.70/125,323.05 = 79,660.70/x
  3. Step 3: Cross multiply
    83,548.70x = 125,323.05 × 79,660.70
  4. Step 4: Simplify right side
    83,548.70x = 9,983,321,889.14
  5. Step 5: Solve for x
    x = 9,983,321,889.14/83,548.70
  6. Step 6: Final answer
    x = 119,491.05

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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.