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Finding the Fourth Proportional to 223,379.78, 308,269.94 and 127,917.23

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Solution

The fourth proportional to 223,379.78, 308,269.94 and 127,917.23 is: 176,529.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,379.78 : 308,269.94 = 127,917.23 : x
  2. Step 2: Convert to fraction form
    223,379.78/308,269.94 = 127,917.23/x
  3. Step 3: Cross multiply
    223,379.78x = 308,269.94 × 127,917.23
  4. Step 4: Simplify right side
    223,379.78x = 39,433,034,636.13
  5. Step 5: Solve for x
    x = 39,433,034,636.13/223,379.78
  6. Step 6: Final answer
    x = 176,529.12

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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.