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Finding the Fourth Proportional to 312,244.61, 430,908.01 and 191,362.55

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Solution

The fourth proportional to 312,244.61, 430,908.01 and 191,362.55 is: 264,086.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,244.61 : 430,908.01 = 191,362.55 : x
  2. Step 2: Convert to fraction form
    312,244.61/430,908.01 = 191,362.55/x
  3. Step 3: Cross multiply
    312,244.61x = 430,908.01 × 191,362.55
  4. Step 4: Simplify right side
    312,244.61x = 82,459,652,976.08
  5. Step 5: Solve for x
    x = 82,459,652,976.08/312,244.61
  6. Step 6: Final answer
    x = 264,086.71

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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.