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Finding the Fourth Proportional to 8,707.80, 13,063.92 and 4,031.18

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Solution

The fourth proportional to 8,707.80, 13,063.92 and 4,031.18 is: 6,047.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.80 : 13,063.92 = 4,031.18 : x
  2. Step 2: Convert to fraction form
    8,707.80/13,063.92 = 4,031.18/x
  3. Step 3: Cross multiply
    8,707.80x = 13,063.92 × 4,031.18
  4. Step 4: Simplify right side
    8,707.80x = 52,662,981.58
  5. Step 5: Solve for x
    x = 52,662,981.58/8,707.80
  6. Step 6: Final answer
    x = 6,047.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.