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Finding the Fourth Proportional to 104,655.40, 156,983.10 and 42,325.90

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Solution

The fourth proportional to 104,655.40, 156,983.10 and 42,325.90 is: 63,488.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,655.40 : 156,983.10 = 42,325.90 : x
  2. Step 2: Convert to fraction form
    104,655.40/156,983.10 = 42,325.90/x
  3. Step 3: Cross multiply
    104,655.40x = 156,983.10 × 42,325.90
  4. Step 4: Simplify right side
    104,655.40x = 6,644,450,992.29
  5. Step 5: Solve for x
    x = 6,644,450,992.29/104,655.40
  6. Step 6: Final answer
    x = 63,488.85

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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.