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Finding the Fourth Proportional to 115,951.20, 173,959.20 and 56,788.80

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Solution

The fourth proportional to 115,951.20, 173,959.20 and 56,788.80 is: 85,199.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,951.20 : 173,959.20 = 56,788.80 : x
  2. Step 2: Convert to fraction form
    115,951.20/173,959.20 = 56,788.80/x
  3. Step 3: Cross multiply
    115,951.20x = 173,959.20 × 56,788.80
  4. Step 4: Simplify right side
    115,951.20x = 9,878,934,216.96
  5. Step 5: Solve for x
    x = 9,878,934,216.96/115,951.20
  6. Step 6: Final answer
    x = 85,199.07

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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.