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Finding the Fourth Proportional to 201,107,796.60, 301,661,694.90 and 79,939,248.60

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Solution

The fourth proportional to 201,107,796.60, 301,661,694.90 and 79,939,248.60 is: 119,908,872.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,107,796.60 : 301,661,694.90 = 79,939,248.60 : x
  2. Step 2: Convert to fraction form
    201,107,796.60/301,661,694.90 = 79,939,248.60/x
  3. Step 3: Cross multiply
    201,107,796.60x = 301,661,694.90 × 79,939,248.60
  4. Step 4: Simplify right side
    201,107,796.60x = 24,114,609,221,708,448
  5. Step 5: Solve for x
    x = 24,114,609,221,708,448/201,107,796.60
  6. Step 6: Final answer
    x = 119,908,872.90

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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.