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Finding the Fourth Proportional to 83,555.87, 115,332.92 and 53,747.87

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Solution

The fourth proportional to 83,555.87, 115,332.92 and 53,747.87 is: 74,188.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,555.87 : 115,332.92 = 53,747.87 : x
  2. Step 2: Convert to fraction form
    83,555.87/115,332.92 = 53,747.87/x
  3. Step 3: Cross multiply
    83,555.87x = 115,332.92 × 53,747.87
  4. Step 4: Simplify right side
    83,555.87x = 6,198,898,522.14
  5. Step 5: Solve for x
    x = 6,198,898,522.14/83,555.87
  6. Step 6: Final answer
    x = 74,188.67

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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.