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Finding the Fourth Proportional to 90,652.88, 125,108.88 and 52,939.28

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Solution

The fourth proportional to 90,652.88, 125,108.88 and 52,939.28 is: 73,060.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,652.88 : 125,108.88 = 52,939.28 : x
  2. Step 2: Convert to fraction form
    90,652.88/125,108.88 = 52,939.28/x
  3. Step 3: Cross multiply
    90,652.88x = 125,108.88 × 52,939.28
  4. Step 4: Simplify right side
    90,652.88x = 6,623,174,028.81
  5. Step 5: Solve for x
    x = 6,623,174,028.81/90,652.88
  6. Step 6: Final answer
    x = 73,060.82

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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.