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Finding the Fourth Proportional to 223,618.57, 308,601.73 and 128,143.73

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Solution

The fourth proportional to 223,618.57, 308,601.73 and 128,143.73 is: 176,843.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,618.57 : 308,601.73 = 128,143.73 : x
  2. Step 2: Convert to fraction form
    223,618.57/308,601.73 = 128,143.73/x
  3. Step 3: Cross multiply
    223,618.57x = 308,601.73 × 128,143.73
  4. Step 4: Simplify right side
    223,618.57x = 39,545,377,698.34
  5. Step 5: Solve for x
    x = 39,545,377,698.34/223,618.57
  6. Step 6: Final answer
    x = 176,843.00

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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.