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Finding the Fourth Proportional to 99,696,936.30, 149,545,404.45 and 65,656,718.70

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Solution

The fourth proportional to 99,696,936.30, 149,545,404.45 and 65,656,718.70 is: 98,485,078.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,696,936.30 : 149,545,404.45 = 65,656,718.70 : x
  2. Step 2: Convert to fraction form
    99,696,936.30/149,545,404.45 = 65,656,718.70/x
  3. Step 3: Cross multiply
    99,696,936.30x = 149,545,404.45 × 65,656,718.70
  4. Step 4: Simplify right side
    99,696,936.30x = 9,818,660,552,851,378
  5. Step 5: Solve for x
    x = 9,818,660,552,851,378/99,696,936.30
  6. Step 6: Final answer
    x = 98,485,078.05

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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.