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Finding the Fourth Proportional to 355,790.39, 533,685.16 and 115,903.90

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Solution

The fourth proportional to 355,790.39, 533,685.16 and 115,903.90 is: 173,855.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,790.39 : 533,685.16 = 115,903.90 : x
  2. Step 2: Convert to fraction form
    355,790.39/533,685.16 = 115,903.90/x
  3. Step 3: Cross multiply
    355,790.39x = 533,685.16 × 115,903.90
  4. Step 4: Simplify right side
    355,790.39x = 61,856,191,416.12
  5. Step 5: Solve for x
    x = 61,856,191,416.12/355,790.39
  6. Step 6: Final answer
    x = 173,855.71

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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.