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Finding the Fourth Proportional to 121,885.96, 182,851.83 and 55,330.77

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Solution

The fourth proportional to 121,885.96, 182,851.83 and 55,330.77 is: 83,006.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,885.96 : 182,851.83 = 55,330.77 : x
  2. Step 2: Convert to fraction form
    121,885.96/182,851.83 = 55,330.77/x
  3. Step 3: Cross multiply
    121,885.96x = 182,851.83 × 55,330.77
  4. Step 4: Simplify right side
    121,885.96x = 10,117,332,549.81
  5. Step 5: Solve for x
    x = 10,117,332,549.81/121,885.96
  6. Step 6: Final answer
    x = 83,006.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.