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Finding the Fourth Proportional to 99,649,907.20, 149,474,860.80 and 99,649,907.20

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Solution

The fourth proportional to 99,649,907.20, 149,474,860.80 and 99,649,907.20 is: 149,474,860.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,649,907.20 : 149,474,860.80 = 99,649,907.20 : x
  2. Step 2: Convert to fraction form
    99,649,907.20/149,474,860.80 = 99,649,907.20/x
  3. Step 3: Cross multiply
    99,649,907.20x = 149,474,860.80 × 99,649,907.20
  4. Step 4: Simplify right side
    99,649,907.20x = 14,895,156,007,452,920
  5. Step 5: Solve for x
    x = 14,895,156,007,452,920/99,649,907.20
  6. Step 6: Final answer
    x = 149,474,860.80

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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.