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Finding the Fourth Proportional to 312,225.89, 430,882.18 and 191,343.84

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Solution

The fourth proportional to 312,225.89, 430,882.18 and 191,343.84 is: 264,060.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,225.89 : 430,882.18 = 191,343.84 : x
  2. Step 2: Convert to fraction form
    312,225.89/430,882.18 = 191,343.84/x
  3. Step 3: Cross multiply
    312,225.89x = 430,882.18 × 191,343.84
  4. Step 4: Simplify right side
    312,225.89x = 82,446,649,711.53
  5. Step 5: Solve for x
    x = 82,446,649,711.53/312,225.89
  6. Step 6: Final answer
    x = 264,060.90

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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.