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Finding the Fourth Proportional to 99,033.87, 136,665.99 and 53,710.86

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Solution

The fourth proportional to 99,033.87, 136,665.99 and 53,710.86 is: 74,120.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,033.87 : 136,665.99 = 53,710.86 : x
  2. Step 2: Convert to fraction form
    99,033.87/136,665.99 = 53,710.86/x
  3. Step 3: Cross multiply
    99,033.87x = 136,665.99 × 53,710.86
  4. Step 4: Simplify right side
    99,033.87x = 7,340,447,855.65
  5. Step 5: Solve for x
    x = 7,340,447,855.65/99,033.87
  6. Step 6: Final answer
    x = 74,120.58

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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.