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Finding the Fourth Proportional to 83,889.14, 115,769.72 and 48,085.92

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Solution

The fourth proportional to 83,889.14, 115,769.72 and 48,085.92 is: 66,360.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,889.14 : 115,769.72 = 48,085.92 : x
  2. Step 2: Convert to fraction form
    83,889.14/115,769.72 = 48,085.92/x
  3. Step 3: Cross multiply
    83,889.14x = 115,769.72 × 48,085.92
  4. Step 4: Simplify right side
    83,889.14x = 5,566,893,614.56
  5. Step 5: Solve for x
    x = 5,566,893,614.56/83,889.14
  6. Step 6: Final answer
    x = 66,360.13

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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.