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Finding the Fourth Proportional to 115,512.70, 173,326.65 and 65,631.10

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Solution

The fourth proportional to 115,512.70, 173,326.65 and 65,631.10 is: 98,479.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,512.70 : 173,326.65 = 65,631.10 : x
  2. Step 2: Convert to fraction form
    115,512.70/173,326.65 = 65,631.10/x
  3. Step 3: Cross multiply
    115,512.70x = 173,326.65 × 65,631.10
  4. Step 4: Simplify right side
    115,512.70x = 11,375,618,698.82
  5. Step 5: Solve for x
    x = 11,375,618,698.82/115,512.70
  6. Step 6: Final answer
    x = 98,479.38

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1.5x scale

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.