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Finding the Fourth Proportional to 281,294.93, 388,196.87 and 153,970.62

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Solution

The fourth proportional to 281,294.93, 388,196.87 and 153,970.62 is: 212,484.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,294.93 : 388,196.87 = 153,970.62 : x
  2. Step 2: Convert to fraction form
    281,294.93/388,196.87 = 153,970.62/x
  3. Step 3: Cross multiply
    281,294.93x = 388,196.87 × 153,970.62
  4. Step 4: Simplify right side
    281,294.93x = 59,770,912,755.96
  5. Step 5: Solve for x
    x = 59,770,912,755.96/281,294.93
  6. Step 6: Final answer
    x = 212,484.86

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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.