Home / 20,507,467.20-30,761,200.80-19,512,139.20

Finding the Fourth Proportional to 20,507,467.20, 30,761,200.80 and 19,512,139.20

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Solution

The fourth proportional to 20,507,467.20, 30,761,200.80 and 19,512,139.20 is: 29,268,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,507,467.20 : 30,761,200.80 = 19,512,139.20 : x
  2. Step 2: Convert to fraction form
    20,507,467.20/30,761,200.80 = 19,512,139.20/x
  3. Step 3: Cross multiply
    20,507,467.20x = 30,761,200.80 × 19,512,139.20
  4. Step 4: Simplify right side
    20,507,467.20x = 600,216,831,968,751.38
  5. Step 5: Solve for x
    x = 600,216,831,968,751.38/20,507,467.20
  6. Step 6: Final answer
    x = 29,268,208.80

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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.