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Finding the Fourth Proportional to 167,613.78, 231,356.04 and 99,678.54

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Solution

The fourth proportional to 167,613.78, 231,356.04 and 99,678.54 is: 137,585.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,613.78 : 231,356.04 = 99,678.54 : x
  2. Step 2: Convert to fraction form
    167,613.78/231,356.04 = 99,678.54/x
  3. Step 3: Cross multiply
    167,613.78x = 231,356.04 × 99,678.54
  4. Step 4: Simplify right side
    167,613.78x = 23,061,232,287.38
  5. Step 5: Solve for x
    x = 23,061,232,287.38/167,613.78
  6. Step 6: Final answer
    x = 137,585.54

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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.