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Finding the Fourth Proportional to 47,486.80, 71,246.70 and 17,913.16

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Solution

The fourth proportional to 47,486.80, 71,246.70 and 17,913.16 is: 26,875.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,486.80 : 71,246.70 = 17,913.16 : x
  2. Step 2: Convert to fraction form
    47,486.80/71,246.70 = 17,913.16/x
  3. Step 3: Cross multiply
    47,486.80x = 71,246.70 × 17,913.16
  4. Step 4: Simplify right side
    47,486.80x = 1,276,253,536.57
  5. Step 5: Solve for x
    x = 1,276,253,536.57/47,486.80
  6. Step 6: Final answer
    x = 26,875.96

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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.