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Finding the Fourth Proportional to 624,283.80, 861,514.68 and 352,363.20

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Solution

The fourth proportional to 624,283.80, 861,514.68 and 352,363.20 is: 486,262.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,283.80 : 861,514.68 = 352,363.20 : x
  2. Step 2: Convert to fraction form
    624,283.80/861,514.68 = 352,363.20/x
  3. Step 3: Cross multiply
    624,283.80x = 861,514.68 × 352,363.20
  4. Step 4: Simplify right side
    624,283.80x = 303,566,069,491.78
  5. Step 5: Solve for x
    x = 303,566,069,491.78/624,283.80
  6. Step 6: Final answer
    x = 486,262.93

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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.