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Finding the Fourth Proportional to 312,299.40, 430,956.84 and 183,219.93

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Solution

The fourth proportional to 312,299.40, 430,956.84 and 183,219.93 is: 252,833.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,299.40 : 430,956.84 = 183,219.93 : x
  2. Step 2: Convert to fraction form
    312,299.40/430,956.84 = 183,219.93/x
  3. Step 3: Cross multiply
    312,299.40x = 430,956.84 × 183,219.93
  4. Step 4: Simplify right side
    312,299.40x = 78,959,882,057.82
  5. Step 5: Solve for x
    x = 78,959,882,057.82/312,299.40
  6. Step 6: Final answer
    x = 252,833.92

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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.