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Finding the Fourth Proportional to 66,067.95, 99,117.06 and 28,634.30

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Solution

The fourth proportional to 66,067.95, 99,117.06 and 28,634.30 is: 42,958.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,067.95 : 99,117.06 = 28,634.30 : x
  2. Step 2: Convert to fraction form
    66,067.95/99,117.06 = 28,634.30/x
  3. Step 3: Cross multiply
    66,067.95x = 99,117.06 × 28,634.30
  4. Step 4: Simplify right side
    66,067.95x = 2,838,147,135.57
  5. Step 5: Solve for x
    x = 2,838,147,135.57/66,067.95
  6. Step 6: Final answer
    x = 42,958.00

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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.