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Finding the Fourth Proportional to 104,978,803.60, 157,468,205.40 and 90,366,144.40

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Solution

The fourth proportional to 104,978,803.60, 157,468,205.40 and 90,366,144.40 is: 135,549,216.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,978,803.60 : 157,468,205.40 = 90,366,144.40 : x
  2. Step 2: Convert to fraction form
    104,978,803.60/157,468,205.40 = 90,366,144.40/x
  3. Step 3: Cross multiply
    104,978,803.60x = 157,468,205.40 × 90,366,144.40
  4. Step 4: Simplify right side
    104,978,803.60x = 14,229,794,587,585,262
  5. Step 5: Solve for x
    x = 14,229,794,587,585,262/104,978,803.60
  6. Step 6: Final answer
    x = 135,549,216.60

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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.