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Finding the Fourth Proportional to 108,756.78, 162,983.44 and 58,729.15

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Solution

The fourth proportional to 108,756.78, 162,983.44 and 58,729.15 is: 88,011.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,756.78 : 162,983.44 = 58,729.15 : x
  2. Step 2: Convert to fraction form
    108,756.78/162,983.44 = 58,729.15/x
  3. Step 3: Cross multiply
    108,756.78x = 162,983.44 × 58,729.15
  4. Step 4: Simplify right side
    108,756.78x = 9,571,879,172.42
  5. Step 5: Solve for x
    x = 9,571,879,172.42/108,756.78
  6. Step 6: Final answer
    x = 88,011.80

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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.