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Finding the Fourth Proportional to 104,658.30, 156,958.65 and 42,335.10

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Solution

The fourth proportional to 104,658.30, 156,958.65 and 42,335.10 is: 63,491.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,658.30 : 156,958.65 = 42,335.10 : x
  2. Step 2: Convert to fraction form
    104,658.30/156,958.65 = 42,335.10/x
  3. Step 3: Cross multiply
    104,658.30x = 156,958.65 × 42,335.10
  4. Step 4: Simplify right side
    104,658.30x = 6,644,860,143.62
  5. Step 5: Solve for x
    x = 6,644,860,143.62/104,658.30
  6. Step 6: Final answer
    x = 63,491.00

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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.