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Finding the Fourth Proportional to 71,553.12, 98,709 and 50,344.08

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Solution

The fourth proportional to 71,553.12, 98,709 and 50,344.08 is: 69,450.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,553.12 : 98,709 = 50,344.08 : x
  2. Step 2: Convert to fraction form
    71,553.12/98,709 = 50,344.08/x
  3. Step 3: Cross multiply
    71,553.12x = 98,709 × 50,344.08
  4. Step 4: Simplify right side
    71,553.12x = 4,969,413,792.72
  5. Step 5: Solve for x
    x = 4,969,413,792.72/71,553.12
  6. Step 6: Final answer
    x = 69,450.69

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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.