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Finding the Fourth Proportional to 519,640.76, 778,833.29 and 253,001.72

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Solution

The fourth proportional to 519,640.76, 778,833.29 and 253,001.72 is: 379,196.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,640.76 : 778,833.29 = 253,001.72 : x
  2. Step 2: Convert to fraction form
    519,640.76/778,833.29 = 253,001.72/x
  3. Step 3: Cross multiply
    519,640.76x = 778,833.29 × 253,001.72
  4. Step 4: Simplify right side
    519,640.76x = 197,046,158,701.60
  5. Step 5: Solve for x
    x = 197,046,158,701.60/519,640.76
  6. Step 6: Final answer
    x = 379,196.89

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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.