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Finding the Fourth Proportional to 92,955.52, 128,278.60 and 55,229.76

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Solution

The fourth proportional to 92,955.52, 128,278.60 and 55,229.76 is: 76,217.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,955.52 : 128,278.60 = 55,229.76 : x
  2. Step 2: Convert to fraction form
    92,955.52/128,278.60 = 55,229.76/x
  3. Step 3: Cross multiply
    92,955.52x = 128,278.60 × 55,229.76
  4. Step 4: Simplify right side
    92,955.52x = 7,084,796,291.14
  5. Step 5: Solve for x
    x = 7,084,796,291.14/92,955.52
  6. Step 6: Final answer
    x = 76,217.06

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1.5x scale

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.