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Finding the Fourth Proportional to 66,616.74, 91,928.34 and 36,403.11

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Solution

The fourth proportional to 66,616.74, 91,928.34 and 36,403.11 is: 50,234.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,616.74 : 91,928.34 = 36,403.11 : x
  2. Step 2: Convert to fraction form
    66,616.74/91,928.34 = 36,403.11/x
  3. Step 3: Cross multiply
    66,616.74x = 91,928.34 × 36,403.11
  4. Step 4: Simplify right side
    66,616.74x = 3,346,477,473.14
  5. Step 5: Solve for x
    x = 3,346,477,473.14/66,616.74
  6. Step 6: Final answer
    x = 50,234.78

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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.