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Finding the Fourth Proportional to 519,332.01, 778,989.87 and 266,466.54

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Solution

The fourth proportional to 519,332.01, 778,989.87 and 266,466.54 is: 399,695.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,332.01 : 778,989.87 = 266,466.54 : x
  2. Step 2: Convert to fraction form
    519,332.01/778,989.87 = 266,466.54/x
  3. Step 3: Cross multiply
    519,332.01x = 778,989.87 × 266,466.54
  4. Step 4: Simplify right side
    519,332.01x = 207,574,735,353.95
  5. Step 5: Solve for x
    x = 207,574,735,353.95/519,332.01
  6. Step 6: Final answer
    x = 399,695.63

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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.