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Finding the Fourth Proportional to 104,638.80, 157,044.60 and 48,565.20

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Solution

The fourth proportional to 104,638.80, 157,044.60 and 48,565.20 is: 72,887.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,638.80 : 157,044.60 = 48,565.20 : x
  2. Step 2: Convert to fraction form
    104,638.80/157,044.60 = 48,565.20/x
  3. Step 3: Cross multiply
    104,638.80x = 157,044.60 × 48,565.20
  4. Step 4: Simplify right side
    104,638.80x = 7,626,902,407.92
  5. Step 5: Solve for x
    x = 7,626,902,407.92/104,638.80
  6. Step 6: Final answer
    x = 72,887.90

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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.