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Finding the Fourth Proportional to 71,742.76, 99,011.46 and 43,446.76

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Solution

The fourth proportional to 71,742.76, 99,011.46 and 43,446.76 is: 59,960.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,742.76 : 99,011.46 = 43,446.76 : x
  2. Step 2: Convert to fraction form
    71,742.76/99,011.46 = 43,446.76/x
  3. Step 3: Cross multiply
    71,742.76x = 99,011.46 × 43,446.76
  4. Step 4: Simplify right side
    71,742.76x = 4,301,727,139.87
  5. Step 5: Solve for x
    x = 4,301,727,139.87/71,742.76
  6. Step 6: Final answer
    x = 59,960.44

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1.5x scale

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.