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Finding the Fourth Proportional to 519,781.89, 779,217.31 and 249,775.55

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Solution

The fourth proportional to 519,781.89, 779,217.31 and 249,775.55 is: 374,444.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,781.89 : 779,217.31 = 249,775.55 : x
  2. Step 2: Convert to fraction form
    519,781.89/779,217.31 = 249,775.55/x
  3. Step 3: Cross multiply
    519,781.89x = 779,217.31 × 249,775.55
  4. Step 4: Simplify right side
    519,781.89x = 194,629,430,925.89
  5. Step 5: Solve for x
    x = 194,629,430,925.89/519,781.89
  6. Step 6: Final answer
    x = 374,444.42

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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.