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Finding the Fourth Proportional to 148,608.40, 205,079.58 and 84,947.56

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Solution

The fourth proportional to 148,608.40, 205,079.58 and 84,947.56 is: 117,227.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,608.40 : 205,079.58 = 84,947.56 : x
  2. Step 2: Convert to fraction form
    148,608.40/205,079.58 = 84,947.56/x
  3. Step 3: Cross multiply
    148,608.40x = 205,079.58 × 84,947.56
  4. Step 4: Simplify right side
    148,608.40x = 17,421,009,926.82
  5. Step 5: Solve for x
    x = 17,421,009,926.82/148,608.40
  6. Step 6: Final answer
    x = 117,227.63

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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.