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Finding the Fourth Proportional to 622,818.40, 932,672.40 and 411,311.20

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Solution

The fourth proportional to 622,818.40, 932,672.40 and 411,311.20 is: 615,939.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,818.40 : 932,672.40 = 411,311.20 : x
  2. Step 2: Convert to fraction form
    622,818.40/932,672.40 = 411,311.20/x
  3. Step 3: Cross multiply
    622,818.40x = 932,672.40 × 411,311.20
  4. Step 4: Simplify right side
    622,818.40x = 383,618,604,050.88
  5. Step 5: Solve for x
    x = 383,618,604,050.88/622,818.40
  6. Step 6: Final answer
    x = 615,939.74

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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.