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Finding the Fourth Proportional to 170,318.37, 235,039.41 and 98,739.98

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Solution

The fourth proportional to 170,318.37, 235,039.41 and 98,739.98 is: 136,261.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,318.37 : 235,039.41 = 98,739.98 : x
  2. Step 2: Convert to fraction form
    170,318.37/235,039.41 = 98,739.98/x
  3. Step 3: Cross multiply
    170,318.37x = 235,039.41 × 98,739.98
  4. Step 4: Simplify right side
    170,318.37x = 23,207,786,642.61
  5. Step 5: Solve for x
    x = 23,207,786,642.61/170,318.37
  6. Step 6: Final answer
    x = 136,261.21

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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.