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Finding the Fourth Proportional to 93,138.39, 139,706.19 and 23,017.70

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Solution

The fourth proportional to 93,138.39, 139,706.19 and 23,017.70 is: 34,526.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,138.39 : 139,706.19 = 23,017.70 : x
  2. Step 2: Convert to fraction form
    93,138.39/139,706.19 = 23,017.70/x
  3. Step 3: Cross multiply
    93,138.39x = 139,706.19 × 23,017.70
  4. Step 4: Simplify right side
    93,138.39x = 3,215,715,169.56
  5. Step 5: Solve for x
    x = 3,215,715,169.56/93,138.39
  6. Step 6: Final answer
    x = 34,526.21

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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.