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Finding the Fourth Proportional to 64,391.04, 88,856.64 and 36,096

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Solution

The fourth proportional to 64,391.04, 88,856.64 and 36,096 is: 49,810.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,391.04 : 88,856.64 = 36,096 : x
  2. Step 2: Convert to fraction form
    64,391.04/88,856.64 = 36,096/x
  3. Step 3: Cross multiply
    64,391.04x = 88,856.64 × 36,096
  4. Step 4: Simplify right side
    64,391.04x = 3,207,369,277.44
  5. Step 5: Solve for x
    x = 3,207,369,277.44/64,391.04
  6. Step 6: Final answer
    x = 49,810.80

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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.