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Finding the Fourth Proportional to 99,667.40, 149,529.90 and 29,548.40

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Solution

The fourth proportional to 99,667.40, 149,529.90 and 29,548.40 is: 44,331.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,667.40 : 149,529.90 = 29,548.40 : x
  2. Step 2: Convert to fraction form
    99,667.40/149,529.90 = 29,548.40/x
  3. Step 3: Cross multiply
    99,667.40x = 149,529.90 × 29,548.40
  4. Step 4: Simplify right side
    99,667.40x = 4,418,369,297.16
  5. Step 5: Solve for x
    x = 4,418,369,297.16/99,667.40
  6. Step 6: Final answer
    x = 44,331.14

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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.