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Finding the Fourth Proportional to 90,596.64, 124,979.76 and 58,775.52

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Solution

The fourth proportional to 90,596.64, 124,979.76 and 58,775.52 is: 81,081.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,596.64 : 124,979.76 = 58,775.52 : x
  2. Step 2: Convert to fraction form
    90,596.64/124,979.76 = 58,775.52/x
  3. Step 3: Cross multiply
    90,596.64x = 124,979.76 × 58,775.52
  4. Step 4: Simplify right side
    90,596.64x = 7,345,750,383.48
  5. Step 5: Solve for x
    x = 7,345,750,383.48/90,596.64
  6. Step 6: Final answer
    x = 81,081.93

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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.