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Finding the Fourth Proportional to 228,609.66, 315,483.87 and 126,636.69

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Solution

The fourth proportional to 228,609.66, 315,483.87 and 126,636.69 is: 174,760.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,609.66 : 315,483.87 = 126,636.69 : x
  2. Step 2: Convert to fraction form
    228,609.66/315,483.87 = 126,636.69/x
  3. Step 3: Cross multiply
    228,609.66x = 315,483.87 × 126,636.69
  4. Step 4: Simplify right side
    228,609.66x = 39,951,833,045.19
  5. Step 5: Solve for x
    x = 39,951,833,045.19/228,609.66
  6. Step 6: Final answer
    x = 174,760.04

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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.