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Finding the Fourth Proportional to 115,434.20, 173,174.70 and 65,538.20

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Solution

The fourth proportional to 115,434.20, 173,174.70 and 65,538.20 is: 98,320.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,434.20 : 173,174.70 = 65,538.20 : x
  2. Step 2: Convert to fraction form
    115,434.20/173,174.70 = 65,538.20/x
  3. Step 3: Cross multiply
    115,434.20x = 173,174.70 × 65,538.20
  4. Step 4: Simplify right side
    115,434.20x = 11,349,558,123.54
  5. Step 5: Solve for x
    x = 11,349,558,123.54/115,434.20
  6. Step 6: Final answer
    x = 98,320.59

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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.