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Finding the Fourth Proportional to 291,772,917.20, 437,659,375.80 and 121,549,710.80

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Solution

The fourth proportional to 291,772,917.20, 437,659,375.80 and 121,549,710.80 is: 182,324,566.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,772,917.20 : 437,659,375.80 = 121,549,710.80 : x
  2. Step 2: Convert to fraction form
    291,772,917.20/437,659,375.80 = 121,549,710.80/x
  3. Step 3: Cross multiply
    291,772,917.20x = 437,659,375.80 × 121,549,710.80
  4. Step 4: Simplify right side
    291,772,917.20x = 53,197,370,557,398,520
  5. Step 5: Solve for x
    x = 53,197,370,557,398,520/291,772,917.20
  6. Step 6: Final answer
    x = 182,324,566.20

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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.