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Finding the Fourth Proportional to 115,814.80, 173,722.20 and 108,816.40

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Solution

The fourth proportional to 115,814.80, 173,722.20 and 108,816.40 is: 163,224.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,814.80 : 173,722.20 = 108,816.40 : x
  2. Step 2: Convert to fraction form
    115,814.80/173,722.20 = 108,816.40/x
  3. Step 3: Cross multiply
    115,814.80x = 173,722.20 × 108,816.40
  4. Step 4: Simplify right side
    115,814.80x = 18,903,824,404.08
  5. Step 5: Solve for x
    x = 18,903,824,404.08/115,814.80
  6. Step 6: Final answer
    x = 163,224.60

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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.