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Finding the Fourth Proportional to 262,170.50, 393,257.19 and 65,178.50

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Solution

The fourth proportional to 262,170.50, 393,257.19 and 65,178.50 is: 97,768.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,170.50 : 393,257.19 = 65,178.50 : x
  2. Step 2: Convert to fraction form
    262,170.50/393,257.19 = 65,178.50/x
  3. Step 3: Cross multiply
    262,170.50x = 393,257.19 × 65,178.50
  4. Step 4: Simplify right side
    262,170.50x = 25,631,913,758.42
  5. Step 5: Solve for x
    x = 25,631,913,758.42/262,170.50
  6. Step 6: Final answer
    x = 97,768.11

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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.