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Finding the Fourth Proportional to 141,062.76, 194,659.92 and 77,399.28

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Solution

The fourth proportional to 141,062.76, 194,659.92 and 77,399.28 is: 106,807.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,062.76 : 194,659.92 = 77,399.28 : x
  2. Step 2: Convert to fraction form
    141,062.76/194,659.92 = 77,399.28/x
  3. Step 3: Cross multiply
    141,062.76x = 194,659.92 × 77,399.28
  4. Step 4: Simplify right side
    141,062.76x = 15,066,537,652.86
  5. Step 5: Solve for x
    x = 15,066,537,652.86/141,062.76
  6. Step 6: Final answer
    x = 106,807.34

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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.