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Finding the Fourth Proportional to 108,603.71, 162,966.72 and 84,844.58

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Solution

The fourth proportional to 108,603.71, 162,966.72 and 84,844.58 is: 127,314.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,603.71 : 162,966.72 = 84,844.58 : x
  2. Step 2: Convert to fraction form
    108,603.71/162,966.72 = 84,844.58/x
  3. Step 3: Cross multiply
    108,603.71x = 162,966.72 × 84,844.58
  4. Step 4: Simplify right side
    108,603.71x = 13,826,842,097.54
  5. Step 5: Solve for x
    x = 13,826,842,097.54/108,603.71
  6. Step 6: Final answer
    x = 127,314.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.