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Finding the Fourth Proportional to 99,368.51, 149,052.78 and 29,231.42

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Solution

The fourth proportional to 99,368.51, 149,052.78 and 29,231.42 is: 43,847.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,368.51 : 149,052.78 = 29,231.42 : x
  2. Step 2: Convert to fraction form
    99,368.51/149,052.78 = 29,231.42/x
  3. Step 3: Cross multiply
    99,368.51x = 149,052.78 × 29,231.42
  4. Step 4: Simplify right side
    99,368.51x = 4,357,023,669.08
  5. Step 5: Solve for x
    x = 4,357,023,669.08/99,368.51
  6. Step 6: Final answer
    x = 43,847.13

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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.