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Finding the Fourth Proportional to 518,933.61, 778,433.22 and 219,358.35

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Solution

The fourth proportional to 518,933.61, 778,433.22 and 219,358.35 is: 329,051.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,933.61 : 778,433.22 = 219,358.35 : x
  2. Step 2: Convert to fraction form
    518,933.61/778,433.22 = 219,358.35/x
  3. Step 3: Cross multiply
    518,933.61x = 778,433.22 × 219,358.35
  4. Step 4: Simplify right side
    518,933.61x = 170,755,826,724.39
  5. Step 5: Solve for x
    x = 170,755,826,724.39/518,933.61
  6. Step 6: Final answer
    x = 329,051.39

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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.