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Finding the Fourth Proportional to 107,063.68, 147,716.16 and 64,604.80

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Solution

The fourth proportional to 107,063.68, 147,716.16 and 64,604.80 is: 89,135.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,063.68 : 147,716.16 = 64,604.80 : x
  2. Step 2: Convert to fraction form
    107,063.68/147,716.16 = 64,604.80/x
  3. Step 3: Cross multiply
    107,063.68x = 147,716.16 × 64,604.80
  4. Step 4: Simplify right side
    107,063.68x = 9,543,172,973.57
  5. Step 5: Solve for x
    x = 9,543,172,973.57/107,063.68
  6. Step 6: Final answer
    x = 89,135.48

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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.