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Finding the Fourth Proportional to 621,256.80, 932,014.80 and 354,799.20

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Solution

The fourth proportional to 621,256.80, 932,014.80 and 354,799.20 is: 532,272.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,256.80 : 932,014.80 = 354,799.20 : x
  2. Step 2: Convert to fraction form
    621,256.80/932,014.80 = 354,799.20/x
  3. Step 3: Cross multiply
    621,256.80x = 932,014.80 × 354,799.20
  4. Step 4: Simplify right side
    621,256.80x = 330,678,105,428.16
  5. Step 5: Solve for x
    x = 330,678,105,428.16/621,256.80
  6. Step 6: Final answer
    x = 532,272.81

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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.