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Finding the Fourth Proportional to 663,552,425.58, 995,490,692.56 and 220,894,250.20

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Solution

The fourth proportional to 663,552,425.58, 995,490,692.56 and 220,894,250.20 is: 331,395,322.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,552,425.58 : 995,490,692.56 = 220,894,250.20 : x
  2. Step 2: Convert to fraction form
    663,552,425.58/995,490,692.56 = 220,894,250.20/x
  3. Step 3: Cross multiply
    663,552,425.58x = 995,490,692.56 × 220,894,250.20
  4. Step 4: Simplify right side
    663,552,425.58x = 219,898,170,114,119,904
  5. Step 5: Solve for x
    x = 219,898,170,114,119,904/663,552,425.58
  6. Step 6: Final answer
    x = 331,395,322.57

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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.