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Finding the Fourth Proportional to 99,394.40, 149,048.40 and 29,259.20

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Solution

The fourth proportional to 99,394.40, 149,048.40 and 29,259.20 is: 43,876.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,394.40 : 149,048.40 = 29,259.20 : x
  2. Step 2: Convert to fraction form
    99,394.40/149,048.40 = 29,259.20/x
  3. Step 3: Cross multiply
    99,394.40x = 149,048.40 × 29,259.20
  4. Step 4: Simplify right side
    99,394.40x = 4,361,036,945.28
  5. Step 5: Solve for x
    x = 4,361,036,945.28/99,394.40
  6. Step 6: Final answer
    x = 43,876.08

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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.