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Finding the Fourth Proportional to 108,602.20, 162,964.47 and 84,843.08

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Solution

The fourth proportional to 108,602.20, 162,964.47 and 84,843.08 is: 127,312.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,602.20 : 162,964.47 = 84,843.08 : x
  2. Step 2: Convert to fraction form
    108,602.20/162,964.47 = 84,843.08/x
  3. Step 3: Cross multiply
    108,602.20x = 162,964.47 × 84,843.08
  4. Step 4: Simplify right side
    108,602.20x = 13,826,407,679.82
  5. Step 5: Solve for x
    x = 13,826,407,679.82/108,602.20
  6. Step 6: Final answer
    x = 127,312.41

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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.