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Finding the Fourth Proportional to 355,843.32, 533,681.14 and 131,081.68

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Solution

The fourth proportional to 355,843.32, 533,681.14 and 131,081.68 is: 196,591.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,843.32 : 533,681.14 = 131,081.68 : x
  2. Step 2: Convert to fraction form
    355,843.32/533,681.14 = 131,081.68/x
  3. Step 3: Cross multiply
    355,843.32x = 533,681.14 × 131,081.68
  4. Step 4: Simplify right side
    355,843.32x = 69,955,820,415.52
  5. Step 5: Solve for x
    x = 69,955,820,415.52/355,843.32
  6. Step 6: Final answer
    x = 196,591.64

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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.