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Finding the Fourth Proportional to 170,338.91, 255,314.61 and 103,632

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Solution

The fourth proportional to 170,338.91, 255,314.61 and 103,632 is: 155,330.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,338.91 : 255,314.61 = 103,632 : x
  2. Step 2: Convert to fraction form
    170,338.91/255,314.61 = 103,632/x
  3. Step 3: Cross multiply
    170,338.91x = 255,314.61 × 103,632
  4. Step 4: Simplify right side
    170,338.91x = 26,458,763,663.52
  5. Step 5: Solve for x
    x = 26,458,763,663.52/170,338.91
  6. Step 6: Final answer
    x = 155,330.12

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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.