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Finding the Fourth Proportional to 108,793.53, 163,113.75 and 42,177.51

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Solution

The fourth proportional to 108,793.53, 163,113.75 and 42,177.51 is: 63,236.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,793.53 : 163,113.75 = 42,177.51 : x
  2. Step 2: Convert to fraction form
    108,793.53/163,113.75 = 42,177.51/x
  3. Step 3: Cross multiply
    108,793.53x = 163,113.75 × 42,177.51
  4. Step 4: Simplify right side
    108,793.53x = 6,879,731,821.76
  5. Step 5: Solve for x
    x = 6,879,731,821.76/108,793.53
  6. Step 6: Final answer
    x = 63,236.59

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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.