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Finding the Fourth Proportional to 43,243.85, 64,865.78 and 18,277.13

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Solution

The fourth proportional to 43,243.85, 64,865.78 and 18,277.13 is: 27,415.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,243.85 : 64,865.78 = 18,277.13 : x
  2. Step 2: Convert to fraction form
    43,243.85/64,865.78 = 18,277.13/x
  3. Step 3: Cross multiply
    43,243.85x = 64,865.78 × 18,277.13
  4. Step 4: Simplify right side
    43,243.85x = 1,185,560,293.61
  5. Step 5: Solve for x
    x = 1,185,560,293.61/43,243.85
  6. Step 6: Final answer
    x = 27,415.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.