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Finding the Fourth Proportional to 251,428.88, 376,894.20 and 118,070.42

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Solution

The fourth proportional to 251,428.88, 376,894.20 and 118,070.42 is: 176,988.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,428.88 : 376,894.20 = 118,070.42 : x
  2. Step 2: Convert to fraction form
    251,428.88/376,894.20 = 118,070.42/x
  3. Step 3: Cross multiply
    251,428.88x = 376,894.20 × 118,070.42
  4. Step 4: Simplify right side
    251,428.88x = 44,500,056,489.56
  5. Step 5: Solve for x
    x = 44,500,056,489.56/251,428.88
  6. Step 6: Final answer
    x = 176,988.64

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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.