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Finding the Fourth Proportional to 68,525.80, 102,788.70 and 62,402.20

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Solution

The fourth proportional to 68,525.80, 102,788.70 and 62,402.20 is: 93,603.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,525.80 : 102,788.70 = 62,402.20 : x
  2. Step 2: Convert to fraction form
    68,525.80/102,788.70 = 62,402.20/x
  3. Step 3: Cross multiply
    68,525.80x = 102,788.70 × 62,402.20
  4. Step 4: Simplify right side
    68,525.80x = 6,414,241,015.14
  5. Step 5: Solve for x
    x = 6,414,241,015.14/68,525.80
  6. Step 6: Final answer
    x = 93,603.30

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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.