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Finding the Fourth Proportional to 519,781.39, 779,216.56 and 249,775.05

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Solution

The fourth proportional to 519,781.39, 779,216.56 and 249,775.05 is: 374,443.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,781.39 : 779,216.56 = 249,775.05 : x
  2. Step 2: Convert to fraction form
    519,781.39/779,216.56 = 249,775.05/x
  3. Step 3: Cross multiply
    519,781.39x = 779,216.56 × 249,775.05
  4. Step 4: Simplify right side
    519,781.39x = 194,628,854,610.39
  5. Step 5: Solve for x
    x = 194,628,854,610.39/519,781.39
  6. Step 6: Final answer
    x = 374,443.68

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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.