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Finding the Fourth Proportional to 62,689.70, 86,511.89 and 34,395.59

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Solution

The fourth proportional to 62,689.70, 86,511.89 and 34,395.59 is: 47,465.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,689.70 : 86,511.89 = 34,395.59 : x
  2. Step 2: Convert to fraction form
    62,689.70/86,511.89 = 34,395.59/x
  3. Step 3: Cross multiply
    62,689.70x = 86,511.89 × 34,395.59
  4. Step 4: Simplify right side
    62,689.70x = 2,975,627,498.57
  5. Step 5: Solve for x
    x = 2,975,627,498.57/62,689.70
  6. Step 6: Final answer
    x = 47,465.97

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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.