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Finding the Fourth Proportional to 55,919.74, 77,143.81 and 33,245.87

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Solution

The fourth proportional to 55,919.74, 77,143.81 and 33,245.87 is: 45,864.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,919.74 : 77,143.81 = 33,245.87 : x
  2. Step 2: Convert to fraction form
    55,919.74/77,143.81 = 33,245.87/x
  3. Step 3: Cross multiply
    55,919.74x = 77,143.81 × 33,245.87
  4. Step 4: Simplify right side
    55,919.74x = 2,564,712,526.62
  5. Step 5: Solve for x
    x = 2,564,712,526.62/55,919.74
  6. Step 6: Final answer
    x = 45,864.18

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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.