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Finding the Fourth Proportional to 62,639.93, 86,446.34 and 35,785.40

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Solution

The fourth proportional to 62,639.93, 86,446.34 and 35,785.40 is: 49,385.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,639.93 : 86,446.34 = 35,785.40 : x
  2. Step 2: Convert to fraction form
    62,639.93/86,446.34 = 35,785.40/x
  3. Step 3: Cross multiply
    62,639.93x = 86,446.34 × 35,785.40
  4. Step 4: Simplify right side
    62,639.93x = 3,093,516,378.47
  5. Step 5: Solve for x
    x = 3,093,516,378.47/62,639.93
  6. Step 6: Final answer
    x = 49,385.69

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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.