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Finding the Fourth Proportional to 139,175.32, 191,796.78 and 136,616.20

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Solution

The fourth proportional to 139,175.32, 191,796.78 and 136,616.20 is: 188,270.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,175.32 : 191,796.78 = 136,616.20 : x
  2. Step 2: Convert to fraction form
    139,175.32/191,796.78 = 136,616.20/x
  3. Step 3: Cross multiply
    139,175.32x = 191,796.78 × 136,616.20
  4. Step 4: Simplify right side
    139,175.32x = 26,202,547,255.84
  5. Step 5: Solve for x
    x = 26,202,547,255.84/139,175.32
  6. Step 6: Final answer
    x = 188,270.07

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1.5x scale

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.