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Finding the Fourth Proportional to 92,881.86, 128,216.19 and 62,708.04

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Solution

The fourth proportional to 92,881.86, 128,216.19 and 62,708.04 is: 86,563.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,881.86 : 128,216.19 = 62,708.04 : x
  2. Step 2: Convert to fraction form
    92,881.86/128,216.19 = 62,708.04/x
  3. Step 3: Cross multiply
    92,881.86x = 128,216.19 × 62,708.04
  4. Step 4: Simplify right side
    92,881.86x = 8,040,185,971.17
  5. Step 5: Solve for x
    x = 8,040,185,971.17/92,881.86
  6. Step 6: Final answer
    x = 86,563.58

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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.