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Finding the Fourth Proportional to 118,973.48, 164,197.12 and 71,226.80

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Solution

The fourth proportional to 118,973.48, 164,197.12 and 71,226.80 is: 98,301.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,973.48 : 164,197.12 = 71,226.80 : x
  2. Step 2: Convert to fraction form
    118,973.48/164,197.12 = 71,226.80/x
  3. Step 3: Cross multiply
    118,973.48x = 164,197.12 × 71,226.80
  4. Step 4: Simplify right side
    118,973.48x = 11,695,234,427.76
  5. Step 5: Solve for x
    x = 11,695,234,427.76/118,973.48
  6. Step 6: Final answer
    x = 98,301.19

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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.