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Finding the Fourth Proportional to 55,856.73, 77,056.58 and 49,489.77

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Solution

The fourth proportional to 55,856.73, 77,056.58 and 49,489.77 is: 68,273.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,856.73 : 77,056.58 = 49,489.77 : x
  2. Step 2: Convert to fraction form
    55,856.73/77,056.58 = 49,489.77/x
  3. Step 3: Cross multiply
    55,856.73x = 77,056.58 × 49,489.77
  4. Step 4: Simplify right side
    55,856.73x = 3,813,512,173.74
  5. Step 5: Solve for x
    x = 3,813,512,173.74/55,856.73
  6. Step 6: Final answer
    x = 68,273.10

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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.