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Finding the Fourth Proportional to 123,644.16, 170,628.84 and 67,055.28

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Solution

The fourth proportional to 123,644.16, 170,628.84 and 67,055.28 is: 92,536.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,644.16 : 170,628.84 = 67,055.28 : x
  2. Step 2: Convert to fraction form
    123,644.16/170,628.84 = 67,055.28/x
  3. Step 3: Cross multiply
    123,644.16x = 170,628.84 × 67,055.28
  4. Step 4: Simplify right side
    123,644.16x = 11,441,564,642.28
  5. Step 5: Solve for x
    x = 11,441,564,642.28/123,644.16
  6. Step 6: Final answer
    x = 92,536.23

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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.