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Finding the Fourth Proportional to 14,671.57, 20,246.78 and 7,957.18

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Solution

The fourth proportional to 14,671.57, 20,246.78 and 7,957.18 is: 10,980.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,671.57 : 20,246.78 = 7,957.18 : x
  2. Step 2: Convert to fraction form
    14,671.57/20,246.78 = 7,957.18/x
  3. Step 3: Cross multiply
    14,671.57x = 20,246.78 × 7,957.18
  4. Step 4: Simplify right side
    14,671.57x = 161,107,272.88
  5. Step 5: Solve for x
    x = 161,107,272.88/14,671.57
  6. Step 6: Final answer
    x = 10,980.92

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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.