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Finding the Fourth Proportional to 519,621.24, 779,454.54 and 164,661.44

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Solution

The fourth proportional to 519,621.24, 779,454.54 and 164,661.44 is: 246,999.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,621.24 : 779,454.54 = 164,661.44 : x
  2. Step 2: Convert to fraction form
    519,621.24/779,454.54 = 164,661.44/x
  3. Step 3: Cross multiply
    519,621.24x = 779,454.54 × 164,661.44
  4. Step 4: Simplify right side
    519,621.24x = 128,346,106,970.94
  5. Step 5: Solve for x
    x = 128,346,106,970.94/519,621.24
  6. Step 6: Final answer
    x = 246,999.35

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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.