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Finding the Fourth Proportional to 73,436.50, 101,342.65 and 39,902.50

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Solution

The fourth proportional to 73,436.50, 101,342.65 and 39,902.50 is: 55,065.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,436.50 : 101,342.65 = 39,902.50 : x
  2. Step 2: Convert to fraction form
    73,436.50/101,342.65 = 39,902.50/x
  3. Step 3: Cross multiply
    73,436.50x = 101,342.65 × 39,902.50
  4. Step 4: Simplify right side
    73,436.50x = 4,043,825,091.63
  5. Step 5: Solve for x
    x = 4,043,825,091.63/73,436.50
  6. Step 6: Final answer
    x = 55,065.60

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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.