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Finding the Fourth Proportional to 80,400.15, 110,934.47 and 46,401.42

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Solution

The fourth proportional to 80,400.15, 110,934.47 and 46,401.42 is: 64,023.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,400.15 : 110,934.47 = 46,401.42 : x
  2. Step 2: Convert to fraction form
    80,400.15/110,934.47 = 46,401.42/x
  3. Step 3: Cross multiply
    80,400.15x = 110,934.47 × 46,401.42
  4. Step 4: Simplify right side
    80,400.15x = 5,147,516,702.94
  5. Step 5: Solve for x
    x = 5,147,516,702.94/80,400.15
  6. Step 6: Final answer
    x = 64,023.72

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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.