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Finding the Fourth Proportional to 251,772.36, 377,528.40 and 74,256.72

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Solution

The fourth proportional to 251,772.36, 377,528.40 and 74,256.72 is: 111,346.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,772.36 : 377,528.40 = 74,256.72 : x
  2. Step 2: Convert to fraction form
    251,772.36/377,528.40 = 74,256.72/x
  3. Step 3: Cross multiply
    251,772.36x = 377,528.40 × 74,256.72
  4. Step 4: Simplify right side
    251,772.36x = 28,034,020,690.85
  5. Step 5: Solve for x
    x = 28,034,020,690.85/251,772.36
  6. Step 6: Final answer
    x = 111,346.70

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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.