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Finding the Fourth Proportional to 519,103.30, 778,873.65 and 282,615.70

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Solution

The fourth proportional to 519,103.30, 778,873.65 and 282,615.70 is: 424,042.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,103.30 : 778,873.65 = 282,615.70 : x
  2. Step 2: Convert to fraction form
    519,103.30/778,873.65 = 282,615.70/x
  3. Step 3: Cross multiply
    519,103.30x = 778,873.65 × 282,615.70
  4. Step 4: Simplify right side
    519,103.30x = 220,121,921,806.31
  5. Step 5: Solve for x
    x = 220,121,921,806.31/519,103.30
  6. Step 6: Final answer
    x = 424,042.62

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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.