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Finding the Fourth Proportional to 99,392.40, 149,045.40 and 29,257.20

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Solution

The fourth proportional to 99,392.40, 149,045.40 and 29,257.20 is: 43,873.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,392.40 : 149,045.40 = 29,257.20 : x
  2. Step 2: Convert to fraction form
    99,392.40/149,045.40 = 29,257.20/x
  3. Step 3: Cross multiply
    99,392.40x = 149,045.40 × 29,257.20
  4. Step 4: Simplify right side
    99,392.40x = 4,360,651,076.88
  5. Step 5: Solve for x
    x = 4,360,651,076.88/99,392.40
  6. Step 6: Final answer
    x = 43,873.08

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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.