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Finding the Fourth Proportional to 196,684,689.60, 295,205,493.60 and 99,707,860.80

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Solution

The fourth proportional to 196,684,689.60, 295,205,493.60 and 99,707,860.80 is: 149,652,259.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,684,689.60 : 295,205,493.60 = 99,707,860.80 : x
  2. Step 2: Convert to fraction form
    196,684,689.60/295,205,493.60 = 99,707,860.80/x
  3. Step 3: Cross multiply
    196,684,689.60x = 295,205,493.60 × 99,707,860.80
  4. Step 4: Simplify right side
    196,684,689.60x = 29,434,308,263,264,092
  5. Step 5: Solve for x
    x = 29,434,308,263,264,092/196,684,689.60
  6. Step 6: Final answer
    x = 149,652,259.78

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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.