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Finding the Fourth Proportional to 258,844.01, 357,220.94 and 156,878.37

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Solution

The fourth proportional to 258,844.01, 357,220.94 and 156,878.37 is: 216,501.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,844.01 : 357,220.94 = 156,878.37 : x
  2. Step 2: Convert to fraction form
    258,844.01/357,220.94 = 156,878.37/x
  3. Step 3: Cross multiply
    258,844.01x = 357,220.94 × 156,878.37
  4. Step 4: Simplify right side
    258,844.01x = 56,040,238,012.68
  5. Step 5: Solve for x
    x = 56,040,238,012.68/258,844.01
  6. Step 6: Final answer
    x = 216,501.97

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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.