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Finding the Fourth Proportional to 247,132.80, 341,064.42 and 139,721.94

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Solution

The fourth proportional to 247,132.80, 341,064.42 and 139,721.94 is: 192,828.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,132.80 : 341,064.42 = 139,721.94 : x
  2. Step 2: Convert to fraction form
    247,132.80/341,064.42 = 139,721.94/x
  3. Step 3: Cross multiply
    247,132.80x = 341,064.42 × 139,721.94
  4. Step 4: Simplify right side
    247,132.80x = 47,654,182,427.37
  5. Step 5: Solve for x
    x = 47,654,182,427.37/247,132.80
  6. Step 6: Final answer
    x = 192,828.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.