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Finding the Fourth Proportional to 99,654,643.70, 149,481,965.55 and 89,610,408.80

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Solution

The fourth proportional to 99,654,643.70, 149,481,965.55 and 89,610,408.80 is: 134,415,613.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,654,643.70 : 149,481,965.55 = 89,610,408.80 : x
  2. Step 2: Convert to fraction form
    99,654,643.70/149,481,965.55 = 89,610,408.80/x
  3. Step 3: Cross multiply
    99,654,643.70x = 149,481,965.55 × 89,610,408.80
  4. Step 4: Simplify right side
    99,654,643.70x = 13,395,140,041,163,018
  5. Step 5: Solve for x
    x = 13,395,140,041,163,018/99,654,643.70
  6. Step 6: Final answer
    x = 134,415,613.20

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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.