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Finding the Fourth Proportional to 59,319.92, 81,879 and 34,187.12

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Solution

The fourth proportional to 59,319.92, 81,879 and 34,187.12 is: 47,188.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,319.92 : 81,879 = 34,187.12 : x
  2. Step 2: Convert to fraction form
    59,319.92/81,879 = 34,187.12/x
  3. Step 3: Cross multiply
    59,319.92x = 81,879 × 34,187.12
  4. Step 4: Simplify right side
    59,319.92x = 2,799,207,198.48
  5. Step 5: Solve for x
    x = 2,799,207,198.48/59,319.92
  6. Step 6: Final answer
    x = 47,188.32

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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.