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Finding the Fourth Proportional to 113,009.81, 155,960.84 and 62,708.81

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Solution

The fourth proportional to 113,009.81, 155,960.84 and 62,708.81 is: 86,542.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,009.81 : 155,960.84 = 62,708.81 : x
  2. Step 2: Convert to fraction form
    113,009.81/155,960.84 = 62,708.81/x
  3. Step 3: Cross multiply
    113,009.81x = 155,960.84 × 62,708.81
  4. Step 4: Simplify right side
    113,009.81x = 9,780,118,759.36
  5. Step 5: Solve for x
    x = 9,780,118,759.36/113,009.81
  6. Step 6: Final answer
    x = 86,542.21

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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.