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Finding the Fourth Proportional to 518,863.52, 778,595.40 and 219,324.72

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Solution

The fourth proportional to 518,863.52, 778,595.40 and 219,324.72 is: 329,113.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,863.52 : 778,595.40 = 219,324.72 : x
  2. Step 2: Convert to fraction form
    518,863.52/778,595.40 = 219,324.72/x
  3. Step 3: Cross multiply
    518,863.52x = 778,595.40 × 219,324.72
  4. Step 4: Simplify right side
    518,863.52x = 170,765,218,098.29
  5. Step 5: Solve for x
    x = 170,765,218,098.29/518,863.52
  6. Step 6: Final answer
    x = 329,113.94

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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.