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Finding the Fourth Proportional to 55,957.55, 77,162.22 and 43,212.78

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Solution

The fourth proportional to 55,957.55, 77,162.22 and 43,212.78 is: 59,587.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,957.55 : 77,162.22 = 43,212.78 : x
  2. Step 2: Convert to fraction form
    55,957.55/77,162.22 = 43,212.78/x
  3. Step 3: Cross multiply
    55,957.55x = 77,162.22 × 43,212.78
  4. Step 4: Simplify right side
    55,957.55x = 3,334,394,037.17
  5. Step 5: Solve for x
    x = 3,334,394,037.17/55,957.55
  6. Step 6: Final answer
    x = 59,587.93

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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.