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Finding the Fourth Proportional to 448,213.86, 618,535.15 and 247,009.86

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Solution

The fourth proportional to 448,213.86, 618,535.15 and 247,009.86 is: 340,873.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,213.86 : 618,535.15 = 247,009.86 : x
  2. Step 2: Convert to fraction form
    448,213.86/618,535.15 = 247,009.86/x
  3. Step 3: Cross multiply
    448,213.86x = 618,535.15 × 247,009.86
  4. Step 4: Simplify right side
    448,213.86x = 152,784,280,189.05
  5. Step 5: Solve for x
    x = 152,784,280,189.05/448,213.86
  6. Step 6: Final answer
    x = 340,873.62

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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.