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Finding the Fourth Proportional to 139,297, 192,137.46 and 93,358

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Solution

The fourth proportional to 139,297, 192,137.46 and 93,358 is: 128,772.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,297 : 192,137.46 = 93,358 : x
  2. Step 2: Convert to fraction form
    139,297/192,137.46 = 93,358/x
  3. Step 3: Cross multiply
    139,297x = 192,137.46 × 93,358
  4. Step 4: Simplify right side
    139,297x = 17,937,568,990.68
  5. Step 5: Solve for x
    x = 17,937,568,990.68/139,297
  6. Step 6: Final answer
    x = 128,772.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.