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Finding the Fourth Proportional to 400,788.19, 601,251.54 and 134,574.40

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Solution

The fourth proportional to 400,788.19, 601,251.54 and 134,574.40 is: 201,884.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,788.19 : 601,251.54 = 134,574.40 : x
  2. Step 2: Convert to fraction form
    400,788.19/601,251.54 = 134,574.40/x
  3. Step 3: Cross multiply
    400,788.19x = 601,251.54 × 134,574.40
  4. Step 4: Simplify right side
    400,788.19x = 80,913,065,244.58
  5. Step 5: Solve for x
    x = 80,913,065,244.58/400,788.19
  6. Step 6: Final answer
    x = 201,884.85

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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.