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Finding the Fourth Proportional to 55,866.74, 77,112.46 and 33,221.68

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Solution

The fourth proportional to 55,866.74, 77,112.46 and 33,221.68 is: 45,855.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,866.74 : 77,112.46 = 33,221.68 : x
  2. Step 2: Convert to fraction form
    55,866.74/77,112.46 = 33,221.68/x
  3. Step 3: Cross multiply
    55,866.74x = 77,112.46 × 33,221.68
  4. Step 4: Simplify right side
    55,866.74x = 2,561,805,470.13
  5. Step 5: Solve for x
    x = 2,561,805,470.13/55,866.74
  6. Step 6: Final answer
    x = 45,855.65

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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.