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Finding the Fourth Proportional to 136,411.79, 188,257.71 and 82,699.07

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Solution

The fourth proportional to 136,411.79, 188,257.71 and 82,699.07 is: 114,130.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,411.79 : 188,257.71 = 82,699.07 : x
  2. Step 2: Convert to fraction form
    136,411.79/188,257.71 = 82,699.07/x
  3. Step 3: Cross multiply
    136,411.79x = 188,257.71 × 82,699.07
  4. Step 4: Simplify right side
    136,411.79x = 15,568,736,596.04
  5. Step 5: Solve for x
    x = 15,568,736,596.04/136,411.79
  6. Step 6: Final answer
    x = 114,130.44

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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.