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Finding the Fourth Proportional to 281,618.73, 388,637.87 and 168,419.61

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Solution

The fourth proportional to 281,618.73, 388,637.87 and 168,419.61 is: 232,421.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,618.73 : 388,637.87 = 168,419.61 : x
  2. Step 2: Convert to fraction form
    281,618.73/388,637.87 = 168,419.61/x
  3. Step 3: Cross multiply
    281,618.73x = 388,637.87 × 168,419.61
  4. Step 4: Simplify right side
    281,618.73x = 65,454,237,654.53
  5. Step 5: Solve for x
    x = 65,454,237,654.53/281,618.73
  6. Step 6: Final answer
    x = 232,421.46

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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.