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Finding the Fourth Proportional to 318,710.97, 477,955.06 and 94,011.76

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Solution

The fourth proportional to 318,710.97, 477,955.06 and 94,011.76 is: 140,984.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,710.97 : 477,955.06 = 94,011.76 : x
  2. Step 2: Convert to fraction form
    318,710.97/477,955.06 = 94,011.76/x
  3. Step 3: Cross multiply
    318,710.97x = 477,955.06 × 94,011.76
  4. Step 4: Simplify right side
    318,710.97x = 44,933,394,961.59
  5. Step 5: Solve for x
    x = 44,933,394,961.59/318,710.97
  6. Step 6: Final answer
    x = 140,984.78

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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.