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Finding the Fourth Proportional to 99,644,542.80, 149,494,807.80 and 48,528,229.20

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Solution

The fourth proportional to 99,644,542.80, 149,494,807.80 and 48,528,229.20 is: 72,805,977.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,644,542.80 : 149,494,807.80 = 48,528,229.20 : x
  2. Step 2: Convert to fraction form
    99,644,542.80/149,494,807.80 = 48,528,229.20/x
  3. Step 3: Cross multiply
    99,644,542.80x = 149,494,807.80 × 48,528,229.20
  4. Step 4: Simplify right side
    99,644,542.80x = 7,254,718,297,128,349
  5. Step 5: Solve for x
    x = 7,254,718,297,128,349/99,644,542.80
  6. Step 6: Final answer
    x = 72,805,977.06

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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.