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Finding the Fourth Proportional to 519,458.80, 778,573.80 and 219,938.80

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Solution

The fourth proportional to 519,458.80, 778,573.80 and 219,938.80 is: 329,648.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,458.80 : 778,573.80 = 219,938.80 : x
  2. Step 2: Convert to fraction form
    519,458.80/778,573.80 = 219,938.80/x
  3. Step 3: Cross multiply
    519,458.80x = 778,573.80 × 219,938.80
  4. Step 4: Simplify right side
    519,458.80x = 171,238,587,283.44
  5. Step 5: Solve for x
    x = 171,238,587,283.44/519,458.80
  6. Step 6: Final answer
    x = 329,648.06

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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.