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Finding the Fourth Proportional to 109,062.60, 163,472.40 and 42,480.60

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Solution

The fourth proportional to 109,062.60, 163,472.40 and 42,480.60 is: 63,673.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,062.60 : 163,472.40 = 42,480.60 : x
  2. Step 2: Convert to fraction form
    109,062.60/163,472.40 = 42,480.60/x
  3. Step 3: Cross multiply
    109,062.60x = 163,472.40 × 42,480.60
  4. Step 4: Simplify right side
    109,062.60x = 6,944,405,635.44
  5. Step 5: Solve for x
    x = 6,944,405,635.44/109,062.60
  6. Step 6: Final answer
    x = 63,673.57

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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.