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Finding the Fourth Proportional to 14,696.67, 20,281.65 and 7,982.31

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Solution

The fourth proportional to 14,696.67, 20,281.65 and 7,982.31 is: 11,015.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,696.67 : 20,281.65 = 7,982.31 : x
  2. Step 2: Convert to fraction form
    14,696.67/20,281.65 = 7,982.31/x
  3. Step 3: Cross multiply
    14,696.67x = 20,281.65 × 7,982.31
  4. Step 4: Simplify right side
    14,696.67x = 161,894,417.61
  5. Step 5: Solve for x
    x = 161,894,417.61/14,696.67
  6. Step 6: Final answer
    x = 11,015.72

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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.