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Finding the Fourth Proportional to 124,394.67, 171,664.68 and 70,679.76

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Solution

The fourth proportional to 124,394.67, 171,664.68 and 70,679.76 is: 97,538.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,394.67 : 171,664.68 = 70,679.76 : x
  2. Step 2: Convert to fraction form
    124,394.67/171,664.68 = 70,679.76/x
  3. Step 3: Cross multiply
    124,394.67x = 171,664.68 × 70,679.76
  4. Step 4: Simplify right side
    124,394.67x = 12,133,218,382.88
  5. Step 5: Solve for x
    x = 12,133,218,382.88/124,394.67
  6. Step 6: Final answer
    x = 97,538.09

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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.