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Finding the Fourth Proportional to 530,197.26, 731,650.32 and 288,480.82

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Solution

The fourth proportional to 530,197.26, 731,650.32 and 288,480.82 is: 398,091.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,197.26 : 731,650.32 = 288,480.82 : x
  2. Step 2: Convert to fraction form
    530,197.26/731,650.32 = 288,480.82/x
  3. Step 3: Cross multiply
    530,197.26x = 731,650.32 × 288,480.82
  4. Step 4: Simplify right side
    530,197.26x = 211,067,084,266.86
  5. Step 5: Solve for x
    x = 211,067,084,266.86/530,197.26
  6. Step 6: Final answer
    x = 398,091.62

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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.