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Finding the Fourth Proportional to 111,663.63, 154,176.26 and 68,700.93

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Solution

The fourth proportional to 111,663.63, 154,176.26 and 68,700.93 is: 94,856.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,663.63 : 154,176.26 = 68,700.93 : x
  2. Step 2: Convert to fraction form
    111,663.63/154,176.26 = 68,700.93/x
  3. Step 3: Cross multiply
    111,663.63x = 154,176.26 × 68,700.93
  4. Step 4: Simplify right side
    111,663.63x = 10,592,052,102.42
  5. Step 5: Solve for x
    x = 10,592,052,102.42/111,663.63
  6. Step 6: Final answer
    x = 94,856.78

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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.