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Finding the Fourth Proportional to 14,671.42, 20,246.42 and 7,957.19

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Solution

The fourth proportional to 14,671.42, 20,246.42 and 7,957.19 is: 10,980.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,671.42 : 20,246.42 = 7,957.19 : x
  2. Step 2: Convert to fraction form
    14,671.42/20,246.42 = 7,957.19/x
  3. Step 3: Cross multiply
    14,671.42x = 20,246.42 × 7,957.19
  4. Step 4: Simplify right side
    14,671.42x = 161,104,570.97
  5. Step 5: Solve for x
    x = 161,104,570.97/14,671.42
  6. Step 6: Final answer
    x = 10,980.85

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Double scale
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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.