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Finding the Fourth Proportional to 109,907.80, 164,861.70 and 63,251.80

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Solution

The fourth proportional to 109,907.80, 164,861.70 and 63,251.80 is: 94,877.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,907.80 : 164,861.70 = 63,251.80 : x
  2. Step 2: Convert to fraction form
    109,907.80/164,861.70 = 63,251.80/x
  3. Step 3: Cross multiply
    109,907.80x = 164,861.70 × 63,251.80
  4. Step 4: Simplify right side
    109,907.80x = 10,427,799,276.06
  5. Step 5: Solve for x
    x = 10,427,799,276.06/109,907.80
  6. Step 6: Final answer
    x = 94,877.70

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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.