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Finding the Fourth Proportional to 622,187.40, 932,589.90 and 341,905.80

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Solution

The fourth proportional to 622,187.40, 932,589.90 and 341,905.80 is: 512,478.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,187.40 : 932,589.90 = 341,905.80 : x
  2. Step 2: Convert to fraction form
    622,187.40/932,589.90 = 341,905.80/x
  3. Step 3: Cross multiply
    622,187.40x = 932,589.90 × 341,905.80
  4. Step 4: Simplify right side
    622,187.40x = 318,857,895,831.42
  5. Step 5: Solve for x
    x = 318,857,895,831.42/622,187.40
  6. Step 6: Final answer
    x = 512,478.87

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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.