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Finding the Fourth Proportional to 62,586.69, 86,340.68 and 55,423.90

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Solution

The fourth proportional to 62,586.69, 86,340.68 and 55,423.90 is: 76,459.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,586.69 : 86,340.68 = 55,423.90 : x
  2. Step 2: Convert to fraction form
    62,586.69/86,340.68 = 55,423.90/x
  3. Step 3: Cross multiply
    62,586.69x = 86,340.68 × 55,423.90
  4. Step 4: Simplify right side
    62,586.69x = 4,785,336,937.13
  5. Step 5: Solve for x
    x = 4,785,336,937.13/62,586.69
  6. Step 6: Final answer
    x = 76,459.34

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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.