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Finding the Fourth Proportional to 68,337.80, 102,564.30 and 33,307.40

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Solution

The fourth proportional to 68,337.80, 102,564.30 and 33,307.40 is: 49,989.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,337.80 : 102,564.30 = 33,307.40 : x
  2. Step 2: Convert to fraction form
    68,337.80/102,564.30 = 33,307.40/x
  3. Step 3: Cross multiply
    68,337.80x = 102,564.30 × 33,307.40
  4. Step 4: Simplify right side
    68,337.80x = 3,416,150,165.82
  5. Step 5: Solve for x
    x = 3,416,150,165.82/68,337.80
  6. Step 6: Final answer
    x = 49,989.17

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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.