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Finding the Fourth Proportional to 201,645.40, 302,276.10 and 75,251.80

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Solution

The fourth proportional to 201,645.40, 302,276.10 and 75,251.80 is: 112,806.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,645.40 : 302,276.10 = 75,251.80 : x
  2. Step 2: Convert to fraction form
    201,645.40/302,276.10 = 75,251.80/x
  3. Step 3: Cross multiply
    201,645.40x = 302,276.10 × 75,251.80
  4. Step 4: Simplify right side
    201,645.40x = 22,746,820,621.98
  5. Step 5: Solve for x
    x = 22,746,820,621.98/201,645.40
  6. Step 6: Final answer
    x = 112,806.05

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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.