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Finding the Fourth Proportional to 14,671.68, 20,246.85 and 7,957.29

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Solution

The fourth proportional to 14,671.68, 20,246.85 and 7,957.29 is: 10,981.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,671.68 : 20,246.85 = 7,957.29 : x
  2. Step 2: Convert to fraction form
    14,671.68/20,246.85 = 7,957.29/x
  3. Step 3: Cross multiply
    14,671.68x = 20,246.85 × 7,957.29
  4. Step 4: Simplify right side
    14,671.68x = 161,110,057.04
  5. Step 5: Solve for x
    x = 161,110,057.04/14,671.68
  6. Step 6: Final answer
    x = 10,981.02

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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.