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Finding the Fourth Proportional to 104,658.40, 156,984.10 and 45,494.08

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Solution

The fourth proportional to 104,658.40, 156,984.10 and 45,494.08 is: 68,239.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,658.40 : 156,984.10 = 45,494.08 : x
  2. Step 2: Convert to fraction form
    104,658.40/156,984.10 = 45,494.08/x
  3. Step 3: Cross multiply
    104,658.40x = 156,984.10 × 45,494.08
  4. Step 4: Simplify right side
    104,658.40x = 7,141,847,204.13
  5. Step 5: Solve for x
    x = 7,141,847,204.13/104,658.40
  6. Step 6: Final answer
    x = 68,239.60

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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.