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Finding the Fourth Proportional to 91,894.20, 137,841.30 and 88,006.20

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Solution

The fourth proportional to 91,894.20, 137,841.30 and 88,006.20 is: 132,009.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,894.20 : 137,841.30 = 88,006.20 : x
  2. Step 2: Convert to fraction form
    91,894.20/137,841.30 = 88,006.20/x
  3. Step 3: Cross multiply
    91,894.20x = 137,841.30 × 88,006.20
  4. Step 4: Simplify right side
    91,894.20x = 12,130,889,016.06
  5. Step 5: Solve for x
    x = 12,130,889,016.06/91,894.20
  6. Step 6: Final answer
    x = 132,009.30

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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.