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Finding the Fourth Proportional to 128,844.60, 193,266.90 and 57,767.10

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Solution

The fourth proportional to 128,844.60, 193,266.90 and 57,767.10 is: 86,650.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,844.60 : 193,266.90 = 57,767.10 : x
  2. Step 2: Convert to fraction form
    128,844.60/193,266.90 = 57,767.10/x
  3. Step 3: Cross multiply
    128,844.60x = 193,266.90 × 57,767.10
  4. Step 4: Simplify right side
    128,844.60x = 11,164,468,338.99
  5. Step 5: Solve for x
    x = 11,164,468,338.99/128,844.60
  6. Step 6: Final answer
    x = 86,650.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.