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Finding the Fourth Proportional to 312,242.68, 430,905.34 and 191,360.62

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Solution

The fourth proportional to 312,242.68, 430,905.34 and 191,360.62 is: 264,084.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,242.68 : 430,905.34 = 191,360.62 : x
  2. Step 2: Convert to fraction form
    312,242.68/430,905.34 = 191,360.62/x
  3. Step 3: Cross multiply
    312,242.68x = 430,905.34 × 191,360.62
  4. Step 4: Simplify right side
    312,242.68x = 82,458,313,023.71
  5. Step 5: Solve for x
    x = 82,458,313,023.71/312,242.68
  6. Step 6: Final answer
    x = 264,084.05

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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.