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Finding the Fourth Proportional to 519,789.48, 779,711.76 and 164,776.20

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Solution

The fourth proportional to 519,789.48, 779,711.76 and 164,776.20 is: 247,173.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,789.48 : 779,711.76 = 164,776.20 : x
  2. Step 2: Convert to fraction form
    519,789.48/779,711.76 = 164,776.20/x
  3. Step 3: Cross multiply
    519,789.48x = 779,711.76 × 164,776.20
  4. Step 4: Simplify right side
    519,789.48x = 128,477,940,908.11
  5. Step 5: Solve for x
    x = 128,477,940,908.11/519,789.48
  6. Step 6: Final answer
    x = 247,173.03

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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.