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Finding the Fourth Proportional to 66,585.57, 99,854.97 and 19,187.99

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Solution

The fourth proportional to 66,585.57, 99,854.97 and 19,187.99 is: 28,775.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,585.57 : 99,854.97 = 19,187.99 : x
  2. Step 2: Convert to fraction form
    66,585.57/99,854.97 = 19,187.99/x
  3. Step 3: Cross multiply
    66,585.57x = 99,854.97 × 19,187.99
  4. Step 4: Simplify right side
    66,585.57x = 1,916,015,666.54
  5. Step 5: Solve for x
    x = 1,916,015,666.54/66,585.57
  6. Step 6: Final answer
    x = 28,775.24

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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.