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Finding the Fourth Proportional to 69,799.16, 104,638.26 and 28,219.16

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Solution

The fourth proportional to 69,799.16, 104,638.26 and 28,219.16 is: 42,304.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,799.16 : 104,638.26 = 28,219.16 : x
  2. Step 2: Convert to fraction form
    69,799.16/104,638.26 = 28,219.16/x
  3. Step 3: Cross multiply
    69,799.16x = 104,638.26 × 28,219.16
  4. Step 4: Simplify right side
    69,799.16x = 2,952,803,801.06
  5. Step 5: Solve for x
    x = 2,952,803,801.06/69,799.16
  6. Step 6: Final answer
    x = 42,304.29

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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.