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Finding the Fourth Proportional to 1,291,983.22, 1,782,919.44 and 719,023.24

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Solution

The fourth proportional to 1,291,983.22, 1,782,919.44 and 719,023.24 is: 992,242.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,983.22 : 1,782,919.44 = 719,023.24 : x
  2. Step 2: Convert to fraction form
    1,291,983.22/1,782,919.44 = 719,023.24/x
  3. Step 3: Cross multiply
    1,291,983.22x = 1,782,919.44 × 719,023.24
  4. Step 4: Simplify right side
    1,291,983.22x = 1,281,960,512,407.79
  5. Step 5: Solve for x
    x = 1,281,960,512,407.79/1,291,983.22
  6. Step 6: Final answer
    x = 992,242.39

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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.