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Finding the Fourth Proportional to 228,405.33, 342,640.89 and 70,646.04

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Solution

The fourth proportional to 228,405.33, 342,640.89 and 70,646.04 is: 105,979.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,405.33 : 342,640.89 = 70,646.04 : x
  2. Step 2: Convert to fraction form
    228,405.33/342,640.89 = 70,646.04/x
  3. Step 3: Cross multiply
    228,405.33x = 342,640.89 × 70,646.04
  4. Step 4: Simplify right side
    228,405.33x = 24,206,222,020.58
  5. Step 5: Solve for x
    x = 24,206,222,020.58/228,405.33
  6. Step 6: Final answer
    x = 105,979.23

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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.