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Finding the Fourth Proportional to 110,397.90, 165,618.45 and 47,217.90

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Solution

The fourth proportional to 110,397.90, 165,618.45 and 47,217.90 is: 70,836.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,397.90 : 165,618.45 = 47,217.90 : x
  2. Step 2: Convert to fraction form
    110,397.90/165,618.45 = 47,217.90/x
  3. Step 3: Cross multiply
    110,397.90x = 165,618.45 × 47,217.90
  4. Step 4: Simplify right side
    110,397.90x = 7,820,155,410.26
  5. Step 5: Solve for x
    x = 7,820,155,410.26/110,397.90
  6. Step 6: Final answer
    x = 70,836.09

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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.