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Finding the Fourth Proportional to 68,258.40, 102,387.60 and 33,266.40

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Solution

The fourth proportional to 68,258.40, 102,387.60 and 33,266.40 is: 49,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,258.40 : 102,387.60 = 33,266.40 : x
  2. Step 2: Convert to fraction form
    68,258.40/102,387.60 = 33,266.40/x
  3. Step 3: Cross multiply
    68,258.40x = 102,387.60 × 33,266.40
  4. Step 4: Simplify right side
    68,258.40x = 3,406,066,856.64
  5. Step 5: Solve for x
    x = 3,406,066,856.64/68,258.40
  6. Step 6: Final answer
    x = 49,899.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.