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Finding the Fourth Proportional to 153,716.78, 212,093.04 and 93,286.08

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Solution

The fourth proportional to 153,716.78, 212,093.04 and 93,286.08 is: 128,712.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,716.78 : 212,093.04 = 93,286.08 : x
  2. Step 2: Convert to fraction form
    153,716.78/212,093.04 = 93,286.08/x
  3. Step 3: Cross multiply
    153,716.78x = 212,093.04 × 93,286.08
  4. Step 4: Simplify right side
    153,716.78x = 19,785,328,296.88
  5. Step 5: Solve for x
    x = 19,785,328,296.88/153,716.78
  6. Step 6: Final answer
    x = 128,712.87

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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.