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Finding the Fourth Proportional to 75,087.92, 103,617.90 and 43,261.40

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Solution

The fourth proportional to 75,087.92, 103,617.90 and 43,261.40 is: 59,698.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,087.92 : 103,617.90 = 43,261.40 : x
  2. Step 2: Convert to fraction form
    75,087.92/103,617.90 = 43,261.40/x
  3. Step 3: Cross multiply
    75,087.92x = 103,617.90 × 43,261.40
  4. Step 4: Simplify right side
    75,087.92x = 4,482,655,419.06
  5. Step 5: Solve for x
    x = 4,482,655,419.06/75,087.92
  6. Step 6: Final answer
    x = 59,698.76

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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.