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Finding the Fourth Proportional to 75,331.71, 103,956.71 and 43,065.95

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Solution

The fourth proportional to 75,331.71, 103,956.71 and 43,065.95 is: 59,430.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,331.71 : 103,956.71 = 43,065.95 : x
  2. Step 2: Convert to fraction form
    75,331.71/103,956.71 = 43,065.95/x
  3. Step 3: Cross multiply
    75,331.71x = 103,956.71 × 43,065.95
  4. Step 4: Simplify right side
    75,331.71x = 4,476,993,739.91
  5. Step 5: Solve for x
    x = 4,476,993,739.91/75,331.71
  6. Step 6: Final answer
    x = 59,430.40

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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.