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Finding the Fourth Proportional to 66,394.08, 99,612 and 19,647.36

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Solution

The fourth proportional to 66,394.08, 99,612 and 19,647.36 is: 29,477.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,394.08 : 99,612 = 19,647.36 : x
  2. Step 2: Convert to fraction form
    66,394.08/99,612 = 19,647.36/x
  3. Step 3: Cross multiply
    66,394.08x = 99,612 × 19,647.36
  4. Step 4: Simplify right side
    66,394.08x = 1,957,112,824.32
  5. Step 5: Solve for x
    x = 1,957,112,824.32/66,394.08
  6. Step 6: Final answer
    x = 29,477.22

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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.