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Finding the Fourth Proportional to 123,859.17, 170,927.96 and 70,144.02

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Solution

The fourth proportional to 123,859.17, 170,927.96 and 70,144.02 is: 96,800.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,859.17 : 170,927.96 = 70,144.02 : x
  2. Step 2: Convert to fraction form
    123,859.17/170,927.96 = 70,144.02/x
  3. Step 3: Cross multiply
    123,859.17x = 170,927.96 × 70,144.02
  4. Step 4: Simplify right side
    123,859.17x = 11,989,573,894.08
  5. Step 5: Solve for x
    x = 11,989,573,894.08/123,859.17
  6. Step 6: Final answer
    x = 96,800.05

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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.