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Finding the Fourth Proportional to 312,889.66, 431,803.56 and 175,084.05

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Solution

The fourth proportional to 312,889.66, 431,803.56 and 175,084.05 is: 241,624.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,889.66 : 431,803.56 = 175,084.05 : x
  2. Step 2: Convert to fraction form
    312,889.66/431,803.56 = 175,084.05/x
  3. Step 3: Cross multiply
    312,889.66x = 431,803.56 × 175,084.05
  4. Step 4: Simplify right side
    312,889.66x = 75,601,918,365.05
  5. Step 5: Solve for x
    x = 75,601,918,365.05/312,889.66
  6. Step 6: Final answer
    x = 241,624.86

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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.