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Finding the Fourth Proportional to 281,186.01, 388,046.30 and 153,861.57

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Solution

The fourth proportional to 281,186.01, 388,046.30 and 153,861.57 is: 212,334.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,186.01 : 388,046.30 = 153,861.57 : x
  2. Step 2: Convert to fraction form
    281,186.01/388,046.30 = 153,861.57/x
  3. Step 3: Cross multiply
    281,186.01x = 388,046.30 × 153,861.57
  4. Step 4: Simplify right side
    281,186.01x = 59,705,412,181.38
  5. Step 5: Solve for x
    x = 59,705,412,181.38/281,186.01
  6. Step 6: Final answer
    x = 212,334.22

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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.