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Finding the Fourth Proportional to 361,999.76, 543,031.55 and 134,298.01

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Solution

The fourth proportional to 361,999.76, 543,031.55 and 134,298.01 is: 201,458.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,999.76 : 543,031.55 = 134,298.01 : x
  2. Step 2: Convert to fraction form
    361,999.76/543,031.55 = 134,298.01/x
  3. Step 3: Cross multiply
    361,999.76x = 543,031.55 × 134,298.01
  4. Step 4: Simplify right side
    361,999.76x = 72,928,057,043.13
  5. Step 5: Solve for x
    x = 72,928,057,043.13/361,999.76
  6. Step 6: Final answer
    x = 201,458.86

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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.