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Finding the Fourth Proportional to 515,851.05, 773,423.61 and 262,641.54

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Solution

The fourth proportional to 515,851.05, 773,423.61 and 262,641.54 is: 393,782.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,851.05 : 773,423.61 = 262,641.54 : x
  2. Step 2: Convert to fraction form
    515,851.05/773,423.61 = 262,641.54/x
  3. Step 3: Cross multiply
    515,851.05x = 773,423.61 × 262,641.54
  4. Step 4: Simplify right side
    515,851.05x = 203,133,168,002.76
  5. Step 5: Solve for x
    x = 203,133,168,002.76/515,851.05
  6. Step 6: Final answer
    x = 393,782.60

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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.