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Finding the Fourth Proportional to 519,091.80, 778,856.40 and 282,604.20

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Solution

The fourth proportional to 519,091.80, 778,856.40 and 282,604.20 is: 424,025.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,091.80 : 778,856.40 = 282,604.20 : x
  2. Step 2: Convert to fraction form
    519,091.80/778,856.40 = 282,604.20/x
  3. Step 3: Cross multiply
    519,091.80x = 778,856.40 × 282,604.20
  4. Step 4: Simplify right side
    519,091.80x = 220,108,089,836.88
  5. Step 5: Solve for x
    x = 220,108,089,836.88/519,091.80
  6. Step 6: Final answer
    x = 424,025.36

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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.