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Finding the Fourth Proportional to 115,370.70, 159,211.41 and 65,069.70

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Solution

The fourth proportional to 115,370.70, 159,211.41 and 65,069.70 is: 89,796.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,370.70 : 159,211.41 = 65,069.70 : x
  2. Step 2: Convert to fraction form
    115,370.70/159,211.41 = 65,069.70/x
  3. Step 3: Cross multiply
    115,370.70x = 159,211.41 × 65,069.70
  4. Step 4: Simplify right side
    115,370.70x = 10,359,838,685.28
  5. Step 5: Solve for x
    x = 10,359,838,685.28/115,370.70
  6. Step 6: Final answer
    x = 89,796.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.