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Finding the Fourth Proportional to 235,855.76, 353,838.98 and 67,378.50

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Solution

The fourth proportional to 235,855.76, 353,838.98 and 67,378.50 is: 101,083.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,855.76 : 353,838.98 = 67,378.50 : x
  2. Step 2: Convert to fraction form
    235,855.76/353,838.98 = 67,378.50/x
  3. Step 3: Cross multiply
    235,855.76x = 353,838.98 × 67,378.50
  4. Step 4: Simplify right side
    235,855.76x = 23,841,139,377.04
  5. Step 5: Solve for x
    x = 23,841,139,377.04/235,855.76
  6. Step 6: Final answer
    x = 101,083.56

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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.