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Finding the Fourth Proportional to 646,781.80, 970,172.70 and 541,805.80

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Solution

The fourth proportional to 646,781.80, 970,172.70 and 541,805.80 is: 812,708.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,781.80 : 970,172.70 = 541,805.80 : x
  2. Step 2: Convert to fraction form
    646,781.80/970,172.70 = 541,805.80/x
  3. Step 3: Cross multiply
    646,781.80x = 970,172.70 × 541,805.80
  4. Step 4: Simplify right side
    646,781.80x = 525,645,195,861.66
  5. Step 5: Solve for x
    x = 525,645,195,861.66/646,781.80
  6. Step 6: Final answer
    x = 812,708.70

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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.