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Finding the Fourth Proportional to 32,679.55, 49,013.10 and 12,689.06

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Solution

The fourth proportional to 32,679.55, 49,013.10 and 12,689.06 is: 19,031.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,679.55 : 49,013.10 = 12,689.06 : x
  2. Step 2: Convert to fraction form
    32,679.55/49,013.10 = 12,689.06/x
  3. Step 3: Cross multiply
    32,679.55x = 49,013.10 × 12,689.06
  4. Step 4: Simplify right side
    32,679.55x = 621,929,921.62
  5. Step 5: Solve for x
    x = 621,929,921.62/32,679.55
  6. Step 6: Final answer
    x = 19,031.16

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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.