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Finding the Fourth Proportional to 104,498.90, 156,748.35 and 103,915.70

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Solution

The fourth proportional to 104,498.90, 156,748.35 and 103,915.70 is: 155,873.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,498.90 : 156,748.35 = 103,915.70 : x
  2. Step 2: Convert to fraction form
    104,498.90/156,748.35 = 103,915.70/x
  3. Step 3: Cross multiply
    104,498.90x = 156,748.35 × 103,915.70
  4. Step 4: Simplify right side
    104,498.90x = 16,288,614,514.10
  5. Step 5: Solve for x
    x = 16,288,614,514.10/104,498.90
  6. Step 6: Final answer
    x = 155,873.55

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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.