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Finding the Fourth Proportional to 29,020.96, 40,048.96 and 15,772.96

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Solution

The fourth proportional to 29,020.96, 40,048.96 and 15,772.96 is: 21,766.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,020.96 : 40,048.96 = 15,772.96 : x
  2. Step 2: Convert to fraction form
    29,020.96/40,048.96 = 15,772.96/x
  3. Step 3: Cross multiply
    29,020.96x = 40,048.96 × 15,772.96
  4. Step 4: Simplify right side
    29,020.96x = 631,690,644.12
  5. Step 5: Solve for x
    x = 631,690,644.12/29,020.96
  6. Step 6: Final answer
    x = 21,766.70

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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.