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Finding the Fourth Proportional to 258,659.55, 356,981.25 and 156,682.02

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Solution

The fourth proportional to 258,659.55, 356,981.25 and 156,682.02 is: 216,240.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,659.55 : 356,981.25 = 156,682.02 : x
  2. Step 2: Convert to fraction form
    258,659.55/356,981.25 = 156,682.02/x
  3. Step 3: Cross multiply
    258,659.55x = 356,981.25 × 156,682.02
  4. Step 4: Simplify right side
    258,659.55x = 55,932,543,352.13
  5. Step 5: Solve for x
    x = 55,932,543,352.13/258,659.55
  6. Step 6: Final answer
    x = 216,240.01

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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.