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Finding the Fourth Proportional to 108,874.64, 163,026.84 and 71,316.56

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Solution

The fourth proportional to 108,874.64, 163,026.84 and 71,316.56 is: 106,788.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,874.64 : 163,026.84 = 71,316.56 : x
  2. Step 2: Convert to fraction form
    108,874.64/163,026.84 = 71,316.56/x
  3. Step 3: Cross multiply
    108,874.64x = 163,026.84 × 71,316.56
  4. Step 4: Simplify right side
    108,874.64x = 11,626,513,416.47
  5. Step 5: Solve for x
    x = 11,626,513,416.47/108,874.64
  6. Step 6: Final answer
    x = 106,788.08

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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.