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Finding the Fourth Proportional to 663,552,901.60, 995,329,352.40 and 203,487,416.80

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Solution

The fourth proportional to 663,552,901.60, 995,329,352.40 and 203,487,416.80 is: 305,231,125.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,552,901.60 : 995,329,352.40 = 203,487,416.80 : x
  2. Step 2: Convert to fraction form
    663,552,901.60/995,329,352.40 = 203,487,416.80/x
  3. Step 3: Cross multiply
    663,552,901.60x = 995,329,352.40 × 203,487,416.80
  4. Step 4: Simplify right side
    663,552,901.60x = 202,536,998,785,092,896
  5. Step 5: Solve for x
    x = 202,536,998,785,092,896/663,552,901.60
  6. Step 6: Final answer
    x = 305,231,125.20

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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.