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Finding the Fourth Proportional to 312,346.76, 468,607.62 and 125,489.48

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Solution

The fourth proportional to 312,346.76, 468,607.62 and 125,489.48 is: 188,269.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,346.76 : 468,607.62 = 125,489.48 : x
  2. Step 2: Convert to fraction form
    312,346.76/468,607.62 = 125,489.48/x
  3. Step 3: Cross multiply
    312,346.76x = 468,607.62 × 125,489.48
  4. Step 4: Simplify right side
    312,346.76x = 58,805,326,557.84
  5. Step 5: Solve for x
    x = 58,805,326,557.84/312,346.76
  6. Step 6: Final answer
    x = 188,269.37

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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.