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Finding the Fourth Proportional to 65,112.66, 89,857.92 and 36,816.66

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Solution

The fourth proportional to 65,112.66, 89,857.92 and 36,816.66 is: 50,808.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,112.66 : 89,857.92 = 36,816.66 : x
  2. Step 2: Convert to fraction form
    65,112.66/89,857.92 = 36,816.66/x
  3. Step 3: Cross multiply
    65,112.66x = 89,857.92 × 36,816.66
  4. Step 4: Simplify right side
    65,112.66x = 3,308,268,488.95
  5. Step 5: Solve for x
    x = 3,308,268,488.95/65,112.66
  6. Step 6: Final answer
    x = 50,808.38

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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.