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Finding the Fourth Proportional to 75,712.64, 104,483.52 and 43,887.68

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Solution

The fourth proportional to 75,712.64, 104,483.52 and 43,887.68 is: 60,565.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,712.64 : 104,483.52 = 43,887.68 : x
  2. Step 2: Convert to fraction form
    75,712.64/104,483.52 = 43,887.68/x
  3. Step 3: Cross multiply
    75,712.64x = 104,483.52 × 43,887.68
  4. Step 4: Simplify right side
    75,712.64x = 4,585,539,291.03
  5. Step 5: Solve for x
    x = 4,585,539,291.03/75,712.64
  6. Step 6: Final answer
    x = 60,565.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.