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Finding the Fourth Proportional to 76,703.87, 115,063.65 and 29,358.74

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Solution

The fourth proportional to 76,703.87, 115,063.65 and 29,358.74 is: 44,041.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,703.87 : 115,063.65 = 29,358.74 : x
  2. Step 2: Convert to fraction form
    76,703.87/115,063.65 = 29,358.74/x
  3. Step 3: Cross multiply
    76,703.87x = 115,063.65 × 29,358.74
  4. Step 4: Simplify right side
    76,703.87x = 3,378,123,208.48
  5. Step 5: Solve for x
    x = 3,378,123,208.48/76,703.87
  6. Step 6: Final answer
    x = 44,041.11

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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.