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Finding the Fourth Proportional to 209,952,863.60, 314,929,295.40 and 186,994,612.40

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Solution

The fourth proportional to 209,952,863.60, 314,929,295.40 and 186,994,612.40 is: 280,491,918.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,863.60 : 314,929,295.40 = 186,994,612.40 : x
  2. Step 2: Convert to fraction form
    209,952,863.60/314,929,295.40 = 186,994,612.40/x
  3. Step 3: Cross multiply
    209,952,863.60x = 314,929,295.40 × 186,994,612.40
  4. Step 4: Simplify right side
    209,952,863.60x = 58,890,081,526,728,104
  5. Step 5: Solve for x
    x = 58,890,081,526,728,104/209,952,863.60
  6. Step 6: Final answer
    x = 280,491,918.60

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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.