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Finding the Fourth Proportional to 218,732.70, 328,099.05 and 183,740.70

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Solution

The fourth proportional to 218,732.70, 328,099.05 and 183,740.70 is: 275,611.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,732.70 : 328,099.05 = 183,740.70 : x
  2. Step 2: Convert to fraction form
    218,732.70/328,099.05 = 183,740.70/x
  3. Step 3: Cross multiply
    218,732.70x = 328,099.05 × 183,740.70
  4. Step 4: Simplify right side
    218,732.70x = 60,285,149,116.34
  5. Step 5: Solve for x
    x = 60,285,149,116.34/218,732.70
  6. Step 6: Final answer
    x = 275,611.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.