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Finding the Fourth Proportional to 75,063.92, 103,352.15 and 63,709.74

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Solution

The fourth proportional to 75,063.92, 103,352.15 and 63,709.74 is: 87,719.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,063.92 : 103,352.15 = 63,709.74 : x
  2. Step 2: Convert to fraction form
    75,063.92/103,352.15 = 63,709.74/x
  3. Step 3: Cross multiply
    75,063.92x = 103,352.15 × 63,709.74
  4. Step 4: Simplify right side
    75,063.92x = 6,584,538,764.22
  5. Step 5: Solve for x
    x = 6,584,538,764.22/75,063.92
  6. Step 6: Final answer
    x = 87,719.10

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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.