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Finding the Fourth Proportional to 537,879.20, 806,818.80 and 512,074.40

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Solution

The fourth proportional to 537,879.20, 806,818.80 and 512,074.40 is: 768,111.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,879.20 : 806,818.80 = 512,074.40 : x
  2. Step 2: Convert to fraction form
    537,879.20/806,818.80 = 512,074.40/x
  3. Step 3: Cross multiply
    537,879.20x = 806,818.80 × 512,074.40
  4. Step 4: Simplify right side
    537,879.20x = 413,151,252,918.72
  5. Step 5: Solve for x
    x = 413,151,252,918.72/537,879.20
  6. Step 6: Final answer
    x = 768,111.60

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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.