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Finding the Fourth Proportional to 605,103,687.30, 907,655,530.95 and 519,010,245.30

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Solution

The fourth proportional to 605,103,687.30, 907,655,530.95 and 519,010,245.30 is: 778,515,367.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,103,687.30 : 907,655,530.95 = 519,010,245.30 : x
  2. Step 2: Convert to fraction form
    605,103,687.30/907,655,530.95 = 519,010,245.30/x
  3. Step 3: Cross multiply
    605,103,687.30x = 907,655,530.95 × 519,010,245.30
  4. Step 4: Simplify right side
    605,103,687.30x = 471,082,519,766,261,248
  5. Step 5: Solve for x
    x = 471,082,519,766,261,248/605,103,687.30
  6. Step 6: Final answer
    x = 778,515,367.95

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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.