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Finding the Fourth Proportional to 312,883.65, 431,776.83 and 176,944.28

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Solution

The fourth proportional to 312,883.65, 431,776.83 and 176,944.28 is: 244,181.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,883.65 : 431,776.83 = 176,944.28 : x
  2. Step 2: Convert to fraction form
    312,883.65/431,776.83 = 176,944.28/x
  3. Step 3: Cross multiply
    312,883.65x = 431,776.83 × 176,944.28
  4. Step 4: Simplify right side
    312,883.65x = 76,400,441,384.47
  5. Step 5: Solve for x
    x = 76,400,441,384.47/312,883.65
  6. Step 6: Final answer
    x = 244,181.64

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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.