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Finding the Fourth Proportional to 77,656.32, 107,161.92 and 44,133.12

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Solution

The fourth proportional to 77,656.32, 107,161.92 and 44,133.12 is: 60,901.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,656.32 : 107,161.92 = 44,133.12 : x
  2. Step 2: Convert to fraction form
    77,656.32/107,161.92 = 44,133.12/x
  3. Step 3: Cross multiply
    77,656.32x = 107,161.92 × 44,133.12
  4. Step 4: Simplify right side
    77,656.32x = 4,729,389,874.79
  5. Step 5: Solve for x
    x = 4,729,389,874.79/77,656.32
  6. Step 6: Final answer
    x = 60,901.55

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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.