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Finding the Fourth Proportional to 98,998.84, 136,624.62 and 54,286.84

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Solution

The fourth proportional to 98,998.84, 136,624.62 and 54,286.84 is: 74,919.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,998.84 : 136,624.62 = 54,286.84 : x
  2. Step 2: Convert to fraction form
    98,998.84/136,624.62 = 54,286.84/x
  3. Step 3: Cross multiply
    98,998.84x = 136,624.62 × 54,286.84
  4. Step 4: Simplify right side
    98,998.84x = 7,416,918,886.00
  5. Step 5: Solve for x
    x = 7,416,918,886.00/98,998.84
  6. Step 6: Final answer
    x = 74,919.25

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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.