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Finding the Fourth Proportional to 109,063.80, 163,595.70 and 67,073.40

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Solution

The fourth proportional to 109,063.80, 163,595.70 and 67,073.40 is: 100,610.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,063.80 : 163,595.70 = 67,073.40 : x
  2. Step 2: Convert to fraction form
    109,063.80/163,595.70 = 67,073.40/x
  3. Step 3: Cross multiply
    109,063.80x = 163,595.70 × 67,073.40
  4. Step 4: Simplify right side
    109,063.80x = 10,972,919,824.38
  5. Step 5: Solve for x
    x = 10,972,919,824.38/109,063.80
  6. Step 6: Final answer
    x = 100,610.10

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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.