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Finding the Fourth Proportional to 29,681.40, 40,961.31 and 16,253.22

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Solution

The fourth proportional to 29,681.40, 40,961.31 and 16,253.22 is: 22,429.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,681.40 : 40,961.31 = 16,253.22 : x
  2. Step 2: Convert to fraction form
    29,681.40/40,961.31 = 16,253.22/x
  3. Step 3: Cross multiply
    29,681.40x = 40,961.31 × 16,253.22
  4. Step 4: Simplify right side
    29,681.40x = 665,753,182.92
  5. Step 5: Solve for x
    x = 665,753,182.92/29,681.40
  6. Step 6: Final answer
    x = 22,429.98

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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.