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Finding the Fourth Proportional to 64,904.20, 89,565.86 and 36,224.68

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Solution

The fourth proportional to 64,904.20, 89,565.86 and 36,224.68 is: 49,988.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,904.20 : 89,565.86 = 36,224.68 : x
  2. Step 2: Convert to fraction form
    64,904.20/89,565.86 = 36,224.68/x
  3. Step 3: Cross multiply
    64,904.20x = 89,565.86 × 36,224.68
  4. Step 4: Simplify right side
    64,904.20x = 3,244,494,617.42
  5. Step 5: Solve for x
    x = 3,244,494,617.42/64,904.20
  6. Step 6: Final answer
    x = 49,988.98

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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.