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Finding the Fourth Proportional to 279,780,655.80, 419,670,983.70 and 88,304,431.80

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Solution

The fourth proportional to 279,780,655.80, 419,670,983.70 and 88,304,431.80 is: 132,456,647.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,780,655.80 : 419,670,983.70 = 88,304,431.80 : x
  2. Step 2: Convert to fraction form
    279,780,655.80/419,670,983.70 = 88,304,431.80/x
  3. Step 3: Cross multiply
    279,780,655.80x = 419,670,983.70 × 88,304,431.80
  4. Step 4: Simplify right side
    279,780,655.80x = 37,058,807,758,575,560
  5. Step 5: Solve for x
    x = 37,058,807,758,575,560/279,780,655.80
  6. Step 6: Final answer
    x = 132,456,647.70

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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.