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Finding the Fourth Proportional to 251,385.42, 346,813.72 and 143,898.01

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Solution

The fourth proportional to 251,385.42, 346,813.72 and 143,898.01 is: 198,523.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,385.42 : 346,813.72 = 143,898.01 : x
  2. Step 2: Convert to fraction form
    251,385.42/346,813.72 = 143,898.01/x
  3. Step 3: Cross multiply
    251,385.42x = 346,813.72 × 143,898.01
  4. Step 4: Simplify right side
    251,385.42x = 49,905,804,148.70
  5. Step 5: Solve for x
    x = 49,905,804,148.70/251,385.42
  6. Step 6: Final answer
    x = 198,523.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.