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Finding the Fourth Proportional to 64,867.90, 89,515.98 and 36,188.44

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Solution

The fourth proportional to 64,867.90, 89,515.98 and 36,188.44 is: 49,939.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,867.90 : 89,515.98 = 36,188.44 : x
  2. Step 2: Convert to fraction form
    64,867.90/89,515.98 = 36,188.44/x
  3. Step 3: Cross multiply
    64,867.90x = 89,515.98 × 36,188.44
  4. Step 4: Simplify right side
    64,867.90x = 3,239,443,671.27
  5. Step 5: Solve for x
    x = 3,239,443,671.27/64,867.90
  6. Step 6: Final answer
    x = 49,939.09

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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.