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Finding the Fourth Proportional to 518,773.26, 778,240.35 and 219,255.11

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Solution

The fourth proportional to 518,773.26, 778,240.35 and 219,255.11 is: 328,916.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,773.26 : 778,240.35 = 219,255.11 : x
  2. Step 2: Convert to fraction form
    518,773.26/778,240.35 = 219,255.11/x
  3. Step 3: Cross multiply
    518,773.26x = 778,240.35 × 219,255.11
  4. Step 4: Simplify right side
    518,773.26x = 170,633,169,654.49
  5. Step 5: Solve for x
    x = 170,633,169,654.49/518,773.26
  6. Step 6: Final answer
    x = 328,916.66

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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.