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Finding the Fourth Proportional to 328,915.67, 453,903.63 and 178,012.67

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Solution

The fourth proportional to 328,915.67, 453,903.63 and 178,012.67 is: 245,657.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,915.67 : 453,903.63 = 178,012.67 : x
  2. Step 2: Convert to fraction form
    328,915.67/453,903.63 = 178,012.67/x
  3. Step 3: Cross multiply
    328,915.67x = 453,903.63 × 178,012.67
  4. Step 4: Simplify right side
    328,915.67x = 80,800,597,098.99
  5. Step 5: Solve for x
    x = 80,800,597,098.99/328,915.67
  6. Step 6: Final answer
    x = 245,657.49

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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.