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Finding the Fourth Proportional to 64,866.90, 89,514.60 and 36,187.44

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Solution

The fourth proportional to 64,866.90, 89,514.60 and 36,187.44 is: 49,937.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,866.90 : 89,514.60 = 36,187.44 : x
  2. Step 2: Convert to fraction form
    64,866.90/89,514.60 = 36,187.44/x
  3. Step 3: Cross multiply
    64,866.90x = 89,514.60 × 36,187.44
  4. Step 4: Simplify right side
    64,866.90x = 3,239,304,216.62
  5. Step 5: Solve for x
    x = 3,239,304,216.62/64,866.90
  6. Step 6: Final answer
    x = 49,937.71

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1.5x scale

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.