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Finding the Fourth Proportional to 71,966.60, 107,949.90 and 47,034.80

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Solution

The fourth proportional to 71,966.60, 107,949.90 and 47,034.80 is: 70,552.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,966.60 : 107,949.90 = 47,034.80 : x
  2. Step 2: Convert to fraction form
    71,966.60/107,949.90 = 47,034.80/x
  3. Step 3: Cross multiply
    71,966.60x = 107,949.90 × 47,034.80
  4. Step 4: Simplify right side
    71,966.60x = 5,077,401,956.52
  5. Step 5: Solve for x
    x = 5,077,401,956.52/71,966.60
  6. Step 6: Final answer
    x = 70,552.20

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1.5x scale

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.