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Finding the Fourth Proportional to 29,407.87, 40,581.51 and 16,660.79

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Solution

The fourth proportional to 29,407.87, 40,581.51 and 16,660.79 is: 22,991.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,407.87 : 40,581.51 = 16,660.79 : x
  2. Step 2: Convert to fraction form
    29,407.87/40,581.51 = 16,660.79/x
  3. Step 3: Cross multiply
    29,407.87x = 40,581.51 × 16,660.79
  4. Step 4: Simplify right side
    29,407.87x = 676,119,996.50
  5. Step 5: Solve for x
    x = 676,119,996.50/29,407.87
  6. Step 6: Final answer
    x = 22,991.13

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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.