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Finding the Fourth Proportional to 29,420.65, 40,600.89 and 15,992.11

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Solution

The fourth proportional to 29,420.65, 40,600.89 and 15,992.11 is: 22,069.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,420.65 : 40,600.89 = 15,992.11 : x
  2. Step 2: Convert to fraction form
    29,420.65/40,600.89 = 15,992.11/x
  3. Step 3: Cross multiply
    29,420.65x = 40,600.89 × 15,992.11
  4. Step 4: Simplify right side
    29,420.65x = 649,293,898.98
  5. Step 5: Solve for x
    x = 649,293,898.98/29,420.65
  6. Step 6: Final answer
    x = 22,069.33

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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.