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Finding the Fourth Proportional to 355,904.70, 535,023.45 and 251,447.10

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Solution

The fourth proportional to 355,904.70, 535,023.45 and 251,447.10 is: 377,994.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,904.70 : 535,023.45 = 251,447.10 : x
  2. Step 2: Convert to fraction form
    355,904.70/535,023.45 = 251,447.10/x
  3. Step 3: Cross multiply
    355,904.70x = 535,023.45 × 251,447.10
  4. Step 4: Simplify right side
    355,904.70x = 134,530,094,934.50
  5. Step 5: Solve for x
    x = 134,530,094,934.50/355,904.70
  6. Step 6: Final answer
    x = 377,994.71

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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.