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Finding the Fourth Proportional to 387,746, 581,619.21 and 177,236.31

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Solution

The fourth proportional to 387,746, 581,619.21 and 177,236.31 is: 265,854.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,746 : 581,619.21 = 177,236.31 : x
  2. Step 2: Convert to fraction form
    387,746/581,619.21 = 177,236.31/x
  3. Step 3: Cross multiply
    387,746x = 581,619.21 × 177,236.31
  4. Step 4: Simplify right side
    387,746x = 103,084,042,605.52
  5. Step 5: Solve for x
    x = 103,084,042,605.52/387,746
  6. Step 6: Final answer
    x = 265,854.56

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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.