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Finding the Fourth Proportional to 66,585.51, 99,860.04 and 19,837.17

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Solution

The fourth proportional to 66,585.51, 99,860.04 and 19,837.17 is: 29,750.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,585.51 : 99,860.04 = 19,837.17 : x
  2. Step 2: Convert to fraction form
    66,585.51/99,860.04 = 19,837.17/x
  3. Step 3: Cross multiply
    66,585.51x = 99,860.04 × 19,837.17
  4. Step 4: Simplify right side
    66,585.51x = 1,980,940,589.69
  5. Step 5: Solve for x
    x = 1,980,940,589.69/66,585.51
  6. Step 6: Final answer
    x = 29,750.33

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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.