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Finding the Fourth Proportional to 63,717.76, 87,920.16 and 35,422.72

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Solution

The fourth proportional to 63,717.76, 87,920.16 and 35,422.72 is: 48,877.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,717.76 : 87,920.16 = 35,422.72 : x
  2. Step 2: Convert to fraction form
    63,717.76/87,920.16 = 35,422.72/x
  3. Step 3: Cross multiply
    63,717.76x = 87,920.16 × 35,422.72
  4. Step 4: Simplify right side
    63,717.76x = 3,114,371,210.04
  5. Step 5: Solve for x
    x = 3,114,371,210.04/63,717.76
  6. Step 6: Final answer
    x = 48,877.60

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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.