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Finding the Fourth Proportional to 29,111.80, 43,700.10 and 15,989.80

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Solution

The fourth proportional to 29,111.80, 43,700.10 and 15,989.80 is: 24,002.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,111.80 : 43,700.10 = 15,989.80 : x
  2. Step 2: Convert to fraction form
    29,111.80/43,700.10 = 15,989.80/x
  3. Step 3: Cross multiply
    29,111.80x = 43,700.10 × 15,989.80
  4. Step 4: Simplify right side
    29,111.80x = 698,755,858.98
  5. Step 5: Solve for x
    x = 698,755,858.98/29,111.80
  6. Step 6: Final answer
    x = 24,002.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.