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Finding the Fourth Proportional to 99,053.40, 136,692.89 and 53,731.27

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Solution

The fourth proportional to 99,053.40, 136,692.89 and 53,731.27 is: 74,148.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,053.40 : 136,692.89 = 53,731.27 : x
  2. Step 2: Convert to fraction form
    99,053.40/136,692.89 = 53,731.27/x
  3. Step 3: Cross multiply
    99,053.40x = 136,692.89 × 53,731.27
  4. Step 4: Simplify right side
    99,053.40x = 7,344,682,579.67
  5. Step 5: Solve for x
    x = 7,344,682,579.67/99,053.40
  6. Step 6: Final answer
    x = 74,148.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.