Home / 20,081,340.30-30,122,010.45-18,695,657.10

Finding the Fourth Proportional to 20,081,340.30, 30,122,010.45 and 18,695,657.10

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Solution

The fourth proportional to 20,081,340.30, 30,122,010.45 and 18,695,657.10 is: 28,043,485.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,081,340.30 : 30,122,010.45 = 18,695,657.10 : x
  2. Step 2: Convert to fraction form
    20,081,340.30/30,122,010.45 = 18,695,657.10/x
  3. Step 3: Cross multiply
    20,081,340.30x = 30,122,010.45 × 18,695,657.10
  4. Step 4: Simplify right side
    20,081,340.30x = 563,150,778,535,816.75
  5. Step 5: Solve for x
    x = 563,150,778,535,816.75/20,081,340.30
  6. Step 6: Final answer
    x = 28,043,485.65

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Double scale
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Similar ratio
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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.