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Finding the Fourth Proportional to 625,695.66, 863,448.75 and 353,758.86

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Solution

The fourth proportional to 625,695.66, 863,448.75 and 353,758.86 is: 488,180.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,695.66 : 863,448.75 = 353,758.86 : x
  2. Step 2: Convert to fraction form
    625,695.66/863,448.75 = 353,758.86/x
  3. Step 3: Cross multiply
    625,695.66x = 863,448.75 × 353,758.86
  4. Step 4: Simplify right side
    625,695.66x = 305,452,645,468.43
  5. Step 5: Solve for x
    x = 305,452,645,468.43/625,695.66
  6. Step 6: Final answer
    x = 488,180.86

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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.