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Finding the Fourth Proportional to 15,335.76, 22,989.06 and 7,021.38

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Solution

The fourth proportional to 15,335.76, 22,989.06 and 7,021.38 is: 10,525.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,335.76 : 22,989.06 = 7,021.38 : x
  2. Step 2: Convert to fraction form
    15,335.76/22,989.06 = 7,021.38/x
  3. Step 3: Cross multiply
    15,335.76x = 22,989.06 × 7,021.38
  4. Step 4: Simplify right side
    15,335.76x = 161,414,926.10
  5. Step 5: Solve for x
    x = 161,414,926.10/15,335.76
  6. Step 6: Final answer
    x = 10,525.39

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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.