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Finding the Fourth Proportional to 251,428.38, 376,893.45 and 118,069.92

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Solution

The fourth proportional to 251,428.38, 376,893.45 and 118,069.92 is: 176,987.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,428.38 : 376,893.45 = 118,069.92 : x
  2. Step 2: Convert to fraction form
    251,428.38/376,893.45 = 118,069.92/x
  3. Step 3: Cross multiply
    251,428.38x = 376,893.45 × 118,069.92
  4. Step 4: Simplify right side
    251,428.38x = 44,499,779,490.02
  5. Step 5: Solve for x
    x = 44,499,779,490.02/251,428.38
  6. Step 6: Final answer
    x = 176,987.89

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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.