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Finding the Fourth Proportional to 66,654.89, 99,871.61 and 46,891.92

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Solution

The fourth proportional to 66,654.89, 99,871.61 and 46,891.92 is: 70,259.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,654.89 : 99,871.61 = 46,891.92 : x
  2. Step 2: Convert to fraction form
    66,654.89/99,871.61 = 46,891.92/x
  3. Step 3: Cross multiply
    66,654.89x = 99,871.61 × 46,891.92
  4. Step 4: Simplify right side
    66,654.89x = 4,683,171,546.39
  5. Step 5: Solve for x
    x = 4,683,171,546.39/66,654.89
  6. Step 6: Final answer
    x = 70,259.98

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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.