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Finding the Fourth Proportional to 64,388.90, 88,855.02 and 35,708.69

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Solution

The fourth proportional to 64,388.90, 88,855.02 and 35,708.69 is: 49,277.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,388.90 : 88,855.02 = 35,708.69 : x
  2. Step 2: Convert to fraction form
    64,388.90/88,855.02 = 35,708.69/x
  3. Step 3: Cross multiply
    64,388.90x = 88,855.02 × 35,708.69
  4. Step 4: Simplify right side
    64,388.90x = 3,172,895,919.85
  5. Step 5: Solve for x
    x = 3,172,895,919.85/64,388.90
  6. Step 6: Final answer
    x = 49,277.07

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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.