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Finding the Fourth Proportional to 193,395.84, 289,965 and 98,660.40

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Solution

The fourth proportional to 193,395.84, 289,965 and 98,660.40 is: 147,924.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,395.84 : 289,965 = 98,660.40 : x
  2. Step 2: Convert to fraction form
    193,395.84/289,965 = 98,660.40/x
  3. Step 3: Cross multiply
    193,395.84x = 289,965 × 98,660.40
  4. Step 4: Simplify right side
    193,395.84x = 28,608,062,886
  5. Step 5: Solve for x
    x = 28,608,062,886/193,395.84
  6. Step 6: Final answer
    x = 147,924.91

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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.