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Finding the Fourth Proportional to 64,391.28, 88,855.14 and 36,091.50

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Solution

The fourth proportional to 64,391.28, 88,855.14 and 36,091.50 is: 49,803.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,391.28 : 88,855.14 = 36,091.50 : x
  2. Step 2: Convert to fraction form
    64,391.28/88,855.14 = 36,091.50/x
  3. Step 3: Cross multiply
    64,391.28x = 88,855.14 × 36,091.50
  4. Step 4: Simplify right side
    64,391.28x = 3,206,915,285.31
  5. Step 5: Solve for x
    x = 3,206,915,285.31/64,391.28
  6. Step 6: Final answer
    x = 49,803.56

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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.