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Finding the Fourth Proportional to 621,718.80, 932,578.20 and 266,672.40

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Solution

The fourth proportional to 621,718.80, 932,578.20 and 266,672.40 is: 400,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,718.80 : 932,578.20 = 266,672.40 : x
  2. Step 2: Convert to fraction form
    621,718.80/932,578.20 = 266,672.40/x
  3. Step 3: Cross multiply
    621,718.80x = 932,578.20 × 266,672.40
  4. Step 4: Simplify right side
    621,718.80x = 248,692,866,781.68
  5. Step 5: Solve for x
    x = 248,692,866,781.68/621,718.80
  6. Step 6: Final answer
    x = 400,008.60

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Similar ratio
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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.