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Finding the Fourth Proportional to 62,868.74, 86,757.12 and 34,574.45

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Solution

The fourth proportional to 62,868.74, 86,757.12 and 34,574.45 is: 47,711.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,868.74 : 86,757.12 = 34,574.45 : x
  2. Step 2: Convert to fraction form
    62,868.74/86,757.12 = 34,574.45/x
  3. Step 3: Cross multiply
    62,868.74x = 86,757.12 × 34,574.45
  4. Step 4: Simplify right side
    62,868.74x = 2,999,579,273.80
  5. Step 5: Solve for x
    x = 2,999,579,273.80/62,868.74
  6. Step 6: Final answer
    x = 47,711.78

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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.