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Finding the Fourth Proportional to 100,829,620.70, 151,244,431.05 and 99,873,026.90

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Solution

The fourth proportional to 100,829,620.70, 151,244,431.05 and 99,873,026.90 is: 149,809,540.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,829,620.70 : 151,244,431.05 = 99,873,026.90 : x
  2. Step 2: Convert to fraction form
    100,829,620.70/151,244,431.05 = 99,873,026.90/x
  3. Step 3: Cross multiply
    100,829,620.70x = 151,244,431.05 × 99,873,026.90
  4. Step 4: Simplify right side
    100,829,620.70x = 15,105,239,130,731,848
  5. Step 5: Solve for x
    x = 15,105,239,130,731,848/100,829,620.70
  6. Step 6: Final answer
    x = 149,809,540.35

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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.