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Finding the Fourth Proportional to 90,756.88, 125,234.90 and 50,464.14

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Solution

The fourth proportional to 90,756.88, 125,234.90 and 50,464.14 is: 69,635.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,756.88 : 125,234.90 = 50,464.14 : x
  2. Step 2: Convert to fraction form
    90,756.88/125,234.90 = 50,464.14/x
  3. Step 3: Cross multiply
    90,756.88x = 125,234.90 × 50,464.14
  4. Step 4: Simplify right side
    90,756.88x = 6,319,870,993.77
  5. Step 5: Solve for x
    x = 6,319,870,993.77/90,756.88
  6. Step 6: Final answer
    x = 69,635.17

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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.