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Finding the Fourth Proportional to 29,220.88, 40,325.16 and 15,972.88

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Solution

The fourth proportional to 29,220.88, 40,325.16 and 15,972.88 is: 22,042.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,220.88 : 40,325.16 = 15,972.88 : x
  2. Step 2: Convert to fraction form
    29,220.88/40,325.16 = 15,972.88/x
  3. Step 3: Cross multiply
    29,220.88x = 40,325.16 × 15,972.88
  4. Step 4: Simplify right side
    29,220.88x = 644,108,941.66
  5. Step 5: Solve for x
    x = 644,108,941.66/29,220.88
  6. Step 6: Final answer
    x = 22,042.76

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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.