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Finding the Fourth Proportional to 123,935.92, 171,031.44 and 67,347.16

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Solution

The fourth proportional to 123,935.92, 171,031.44 and 67,347.16 is: 92,939.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,935.92 : 171,031.44 = 67,347.16 : x
  2. Step 2: Convert to fraction form
    123,935.92/171,031.44 = 67,347.16/x
  3. Step 3: Cross multiply
    123,935.92x = 171,031.44 × 67,347.16
  4. Step 4: Simplify right side
    123,935.92x = 11,518,481,754.71
  5. Step 5: Solve for x
    x = 11,518,481,754.71/123,935.92
  6. Step 6: Final answer
    x = 92,939.01

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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.