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Finding the Fourth Proportional to 363,735,479.60, 545,603,219.40 and 218,616,657.20

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Solution

The fourth proportional to 363,735,479.60, 545,603,219.40 and 218,616,657.20 is: 327,924,985.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,735,479.60 : 545,603,219.40 = 218,616,657.20 : x
  2. Step 2: Convert to fraction form
    363,735,479.60/545,603,219.40 = 218,616,657.20/x
  3. Step 3: Cross multiply
    363,735,479.60x = 545,603,219.40 × 218,616,657.20
  4. Step 4: Simplify right side
    363,735,479.60x = 119,277,951,982,786,176
  5. Step 5: Solve for x
    x = 119,277,951,982,786,176/363,735,479.60
  6. Step 6: Final answer
    x = 327,924,985.80

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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.