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Finding the Fourth Proportional to 363,791,447.40, 545,691,836.70 and 121,454,351.40

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Solution

The fourth proportional to 363,791,447.40, 545,691,836.70 and 121,454,351.40 is: 182,183,084.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,791,447.40 : 545,691,836.70 = 121,454,351.40 : x
  2. Step 2: Convert to fraction form
    363,791,447.40/545,691,836.70 = 121,454,351.40/x
  3. Step 3: Cross multiply
    363,791,447.40x = 545,691,836.70 × 121,454,351.40
  4. Step 4: Simplify right side
    363,791,447.40x = 66,276,648,090,673,224
  5. Step 5: Solve for x
    x = 66,276,648,090,673,224/363,791,447.40
  6. Step 6: Final answer
    x = 182,183,084.74

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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.