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Finding the Fourth Proportional to 108,798.90, 163,086.08 and 45,655.70

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Solution

The fourth proportional to 108,798.90, 163,086.08 and 45,655.70 is: 68,436.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,798.90 : 163,086.08 = 45,655.70 : x
  2. Step 2: Convert to fraction form
    108,798.90/163,086.08 = 45,655.70/x
  3. Step 3: Cross multiply
    108,798.90x = 163,086.08 × 45,655.70
  4. Step 4: Simplify right side
    108,798.90x = 7,445,809,142.66
  5. Step 5: Solve for x
    x = 7,445,809,142.66/108,798.90
  6. Step 6: Final answer
    x = 68,436.44

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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.