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Finding the Fourth Proportional to 165,426.40, 248,139.60 and 65,553.40

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Solution

The fourth proportional to 165,426.40, 248,139.60 and 65,553.40 is: 98,330.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,426.40 : 248,139.60 = 65,553.40 : x
  2. Step 2: Convert to fraction form
    165,426.40/248,139.60 = 65,553.40/x
  3. Step 3: Cross multiply
    165,426.40x = 248,139.60 × 65,553.40
  4. Step 4: Simplify right side
    165,426.40x = 16,266,394,454.64
  5. Step 5: Solve for x
    x = 16,266,394,454.64/165,426.40
  6. Step 6: Final answer
    x = 98,330.10

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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.