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Finding the Fourth Proportional to 515,704.48, 773,239.12 and 178,666.72

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Solution

The fourth proportional to 515,704.48, 773,239.12 and 178,666.72 is: 267,890.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,704.48 : 773,239.12 = 178,666.72 : x
  2. Step 2: Convert to fraction form
    515,704.48/773,239.12 = 178,666.72/x
  3. Step 3: Cross multiply
    515,704.48x = 773,239.12 × 178,666.72
  4. Step 4: Simplify right side
    515,704.48x = 138,152,097,346.09
  5. Step 5: Solve for x
    x = 138,152,097,346.09/515,704.48
  6. Step 6: Final answer
    x = 267,890.05

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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.