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Finding the Fourth Proportional to 148,646.98, 205,133.39 and 80,663.97

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Solution

The fourth proportional to 148,646.98, 205,133.39 and 80,663.97 is: 111,316.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,646.98 : 205,133.39 = 80,663.97 : x
  2. Step 2: Convert to fraction form
    148,646.98/205,133.39 = 80,663.97/x
  3. Step 3: Cross multiply
    148,646.98x = 205,133.39 × 80,663.97
  4. Step 4: Simplify right side
    148,646.98x = 16,546,873,818.62
  5. Step 5: Solve for x
    x = 16,546,873,818.62/148,646.98
  6. Step 6: Final answer
    x = 111,316.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.