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Finding the Fourth Proportional to 99,799,513.70, 149,699,270.55 and 65,362,136.90

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Solution

The fourth proportional to 99,799,513.70, 149,699,270.55 and 65,362,136.90 is: 98,043,205.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,799,513.70 : 149,699,270.55 = 65,362,136.90 : x
  2. Step 2: Convert to fraction form
    99,799,513.70/149,699,270.55 = 65,362,136.90/x
  3. Step 3: Cross multiply
    99,799,513.70x = 149,699,270.55 × 65,362,136.90
  4. Step 4: Simplify right side
    99,799,513.70x = 9,784,664,215,519,238
  5. Step 5: Solve for x
    x = 9,784,664,215,519,238/99,799,513.70
  6. Step 6: Final answer
    x = 98,043,205.35

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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.