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Finding the Fourth Proportional to 315,396.06, 435,181.59 and 181,234.14

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Solution

The fourth proportional to 315,396.06, 435,181.59 and 181,234.14 is: 250,065.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,396.06 : 435,181.59 = 181,234.14 : x
  2. Step 2: Convert to fraction form
    315,396.06/435,181.59 = 181,234.14/x
  3. Step 3: Cross multiply
    315,396.06x = 435,181.59 × 181,234.14
  4. Step 4: Simplify right side
    315,396.06x = 78,869,761,207.48
  5. Step 5: Solve for x
    x = 78,869,761,207.48/315,396.06
  6. Step 6: Final answer
    x = 250,065.78

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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.