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Finding the Fourth Proportional to 196,489.50, 270,533.79 and 178,530.78

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Solution

The fourth proportional to 196,489.50, 270,533.79 and 178,530.78 is: 245,807.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,489.50 : 270,533.79 = 178,530.78 : x
  2. Step 2: Convert to fraction form
    196,489.50/270,533.79 = 178,530.78/x
  3. Step 3: Cross multiply
    196,489.50x = 270,533.79 × 178,530.78
  4. Step 4: Simplify right side
    196,489.50x = 48,298,608,545.06
  5. Step 5: Solve for x
    x = 48,298,608,545.06/196,489.50
  6. Step 6: Final answer
    x = 245,807.58

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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.