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Finding the Fourth Proportional to 312,003.56, 430,527.84 and 176,029.56

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Solution

The fourth proportional to 312,003.56, 430,527.84 and 176,029.56 is: 242,899.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,003.56 : 430,527.84 = 176,029.56 : x
  2. Step 2: Convert to fraction form
    312,003.56/430,527.84 = 176,029.56/x
  3. Step 3: Cross multiply
    312,003.56x = 430,527.84 × 176,029.56
  4. Step 4: Simplify right side
    312,003.56x = 75,785,626,242.95
  5. Step 5: Solve for x
    x = 75,785,626,242.95/312,003.56
  6. Step 6: Final answer
    x = 242,899.88

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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.