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Finding the Fourth Proportional to 55,919.61, 77,143.63 and 33,245.74

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Solution

The fourth proportional to 55,919.61, 77,143.63 and 33,245.74 is: 45,864.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,919.61 : 77,143.63 = 33,245.74 : x
  2. Step 2: Convert to fraction form
    55,919.61/77,143.63 = 33,245.74/x
  3. Step 3: Cross multiply
    55,919.61x = 77,143.63 × 33,245.74
  4. Step 4: Simplify right side
    55,919.61x = 2,564,696,872.78
  5. Step 5: Solve for x
    x = 2,564,696,872.78/55,919.61
  6. Step 6: Final answer
    x = 45,864.00

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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.