Home / 18,723,999.90-28,085,999.85-11,512,148.70

Finding the Fourth Proportional to 18,723,999.90, 28,085,999.85 and 11,512,148.70

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Solution

The fourth proportional to 18,723,999.90, 28,085,999.85 and 11,512,148.70 is: 17,268,223.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723,999.90 : 28,085,999.85 = 11,512,148.70 : x
  2. Step 2: Convert to fraction form
    18,723,999.90/28,085,999.85 = 11,512,148.70/x
  3. Step 3: Cross multiply
    18,723,999.90x = 28,085,999.85 × 11,512,148.70
  4. Step 4: Simplify right side
    18,723,999.90x = 323,330,206,661,377.69
  5. Step 5: Solve for x
    x = 323,330,206,661,377.69/18,723,999.90
  6. Step 6: Final answer
    x = 17,268,223.05

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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.