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Finding the Fourth Proportional to 18,457.60, 25,471.20 and 10,073.92

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Solution

The fourth proportional to 18,457.60, 25,471.20 and 10,073.92 is: 13,901.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,457.60 : 25,471.20 = 10,073.92 : x
  2. Step 2: Convert to fraction form
    18,457.60/25,471.20 = 10,073.92/x
  3. Step 3: Cross multiply
    18,457.60x = 25,471.20 × 10,073.92
  4. Step 4: Simplify right side
    18,457.60x = 256,594,831.10
  5. Step 5: Solve for x
    x = 256,594,831.10/18,457.60
  6. Step 6: Final answer
    x = 13,901.85

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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.