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Finding the Fourth Proportional to 516,600.69, 774,902.55 and 156,774.49

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Solution

The fourth proportional to 516,600.69, 774,902.55 and 156,774.49 is: 235,162.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,600.69 : 774,902.55 = 156,774.49 : x
  2. Step 2: Convert to fraction form
    516,600.69/774,902.55 = 156,774.49/x
  3. Step 3: Cross multiply
    516,600.69x = 774,902.55 × 156,774.49
  4. Step 4: Simplify right side
    516,600.69x = 121,484,949,844.74
  5. Step 5: Solve for x
    x = 121,484,949,844.74/516,600.69
  6. Step 6: Final answer
    x = 235,162.19

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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.