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Finding the Fourth Proportional to 109,849.80, 164,446.65 and 65,453.70

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Solution

The fourth proportional to 109,849.80, 164,446.65 and 65,453.70 is: 97,985.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,849.80 : 164,446.65 = 65,453.70 : x
  2. Step 2: Convert to fraction form
    109,849.80/164,446.65 = 65,453.70/x
  3. Step 3: Cross multiply
    109,849.80x = 164,446.65 × 65,453.70
  4. Step 4: Simplify right side
    109,849.80x = 10,763,641,695.11
  5. Step 5: Solve for x
    x = 10,763,641,695.11/109,849.80
  6. Step 6: Final answer
    x = 97,985.08

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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.