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Finding the Fourth Proportional to 105,069.80, 157,604.70 and 52,581.80

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Solution

The fourth proportional to 105,069.80, 157,604.70 and 52,581.80 is: 78,872.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,069.80 : 157,604.70 = 52,581.80 : x
  2. Step 2: Convert to fraction form
    105,069.80/157,604.70 = 52,581.80/x
  3. Step 3: Cross multiply
    105,069.80x = 157,604.70 × 52,581.80
  4. Step 4: Simplify right side
    105,069.80x = 8,287,138,814.46
  5. Step 5: Solve for x
    x = 8,287,138,814.46/105,069.80
  6. Step 6: Final answer
    x = 78,872.70

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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.