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Finding the Fourth Proportional to 108,659.78, 162,895.44 and 42,054.06

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Solution

The fourth proportional to 108,659.78, 162,895.44 and 42,054.06 is: 63,044.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,659.78 : 162,895.44 = 42,054.06 : x
  2. Step 2: Convert to fraction form
    108,659.78/162,895.44 = 42,054.06/x
  3. Step 3: Cross multiply
    108,659.78x = 162,895.44 × 42,054.06
  4. Step 4: Simplify right side
    108,659.78x = 6,850,414,607.49
  5. Step 5: Solve for x
    x = 6,850,414,607.49/108,659.78
  6. Step 6: Final answer
    x = 63,044.62

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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.