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Finding the Fourth Proportional to 15,335.29, 22,980.14 and 7,929.87

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Solution

The fourth proportional to 15,335.29, 22,980.14 and 7,929.87 is: 11,883.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,335.29 : 22,980.14 = 7,929.87 : x
  2. Step 2: Convert to fraction form
    15,335.29/22,980.14 = 7,929.87/x
  3. Step 3: Cross multiply
    15,335.29x = 22,980.14 × 7,929.87
  4. Step 4: Simplify right side
    15,335.29x = 182,229,426.69
  5. Step 5: Solve for x
    x = 182,229,426.69/15,335.29
  6. Step 6: Final answer
    x = 11,883.01

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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.