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Finding the Fourth Proportional to 530,187.26, 731,636.52 and 288,470.82

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Solution

The fourth proportional to 530,187.26, 731,636.52 and 288,470.82 is: 398,077.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,187.26 : 731,636.52 = 288,470.82 : x
  2. Step 2: Convert to fraction form
    530,187.26/731,636.52 = 288,470.82/x
  3. Step 3: Cross multiply
    530,187.26x = 731,636.52 × 288,470.82
  4. Step 4: Simplify right side
    530,187.26x = 211,055,786,866.35
  5. Step 5: Solve for x
    x = 211,055,786,866.35/530,187.26
  6. Step 6: Final answer
    x = 398,077.82

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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.