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Finding the Fourth Proportional to 110,396.90, 165,616.95 and 47,216.90

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Solution

The fourth proportional to 110,396.90, 165,616.95 and 47,216.90 is: 70,834.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,396.90 : 165,616.95 = 47,216.90 : x
  2. Step 2: Convert to fraction form
    110,396.90/165,616.95 = 47,216.90/x
  3. Step 3: Cross multiply
    110,396.90x = 165,616.95 × 47,216.90
  4. Step 4: Simplify right side
    110,396.90x = 7,819,918,966.46
  5. Step 5: Solve for x
    x = 7,819,918,966.46/110,396.90
  6. Step 6: Final answer
    x = 70,834.59

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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.