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Finding the Fourth Proportional to 68,712.60, 103,032.45 and 24,340.80

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Solution

The fourth proportional to 68,712.60, 103,032.45 and 24,340.80 is: 36,498.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,712.60 : 103,032.45 = 24,340.80 : x
  2. Step 2: Convert to fraction form
    68,712.60/103,032.45 = 24,340.80/x
  3. Step 3: Cross multiply
    68,712.60x = 103,032.45 × 24,340.80
  4. Step 4: Simplify right side
    68,712.60x = 2,507,892,258.96
  5. Step 5: Solve for x
    x = 2,507,892,258.96/68,712.60
  6. Step 6: Final answer
    x = 36,498.29

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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.