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Finding the Fourth Proportional to 115,521.40, 173,358.90 and 65,601.40

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Solution

The fourth proportional to 115,521.40, 173,358.90 and 65,601.40 is: 98,445.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,521.40 : 173,358.90 = 65,601.40 : x
  2. Step 2: Convert to fraction form
    115,521.40/173,358.90 = 65,601.40/x
  3. Step 3: Cross multiply
    115,521.40x = 173,358.90 × 65,601.40
  4. Step 4: Simplify right side
    115,521.40x = 11,372,586,542.46
  5. Step 5: Solve for x
    x = 11,372,586,542.46/115,521.40
  6. Step 6: Final answer
    x = 98,445.71

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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.