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Finding the Fourth Proportional to 29,421.65, 40,602.27 and 15,993.11

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Solution

The fourth proportional to 29,421.65, 40,602.27 and 15,993.11 is: 22,070.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,421.65 : 40,602.27 = 15,993.11 : x
  2. Step 2: Convert to fraction form
    29,421.65/40,602.27 = 15,993.11/x
  3. Step 3: Cross multiply
    29,421.65x = 40,602.27 × 15,993.11
  4. Step 4: Simplify right side
    29,421.65x = 649,356,570.36
  5. Step 5: Solve for x
    x = 649,356,570.36/29,421.65
  6. Step 6: Final answer
    x = 22,070.71

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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.