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Finding the Fourth Proportional to 653,253.73, 978,961.65 and 519,540.55

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Solution

The fourth proportional to 653,253.73, 978,961.65 and 519,540.55 is: 778,579.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,253.73 : 978,961.65 = 519,540.55 : x
  2. Step 2: Convert to fraction form
    653,253.73/978,961.65 = 519,540.55/x
  3. Step 3: Cross multiply
    653,253.73x = 978,961.65 × 519,540.55
  4. Step 4: Simplify right side
    653,253.73x = 508,610,274,069.91
  5. Step 5: Solve for x
    x = 508,610,274,069.91/653,253.73
  6. Step 6: Final answer
    x = 778,579.98

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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.