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Finding the Fourth Proportional to 108,558.88, 149,822.40 and 62,620.32

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Solution

The fourth proportional to 108,558.88, 149,822.40 and 62,620.32 is: 86,422.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,558.88 : 149,822.40 = 62,620.32 : x
  2. Step 2: Convert to fraction form
    108,558.88/149,822.40 = 62,620.32/x
  3. Step 3: Cross multiply
    108,558.88x = 149,822.40 × 62,620.32
  4. Step 4: Simplify right side
    108,558.88x = 9,381,926,631.17
  5. Step 5: Solve for x
    x = 9,381,926,631.17/108,558.88
  6. Step 6: Final answer
    x = 86,422.47

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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.