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Finding the Fourth Proportional to 199,344,892.80, 299,017,339.20 and 196,657,507.20

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Solution

The fourth proportional to 199,344,892.80, 299,017,339.20 and 196,657,507.20 is: 294,986,260.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,344,892.80 : 299,017,339.20 = 196,657,507.20 : x
  2. Step 2: Convert to fraction form
    199,344,892.80/299,017,339.20 = 196,657,507.20/x
  3. Step 3: Cross multiply
    199,344,892.80x = 299,017,339.20 × 196,657,507.20
  4. Step 4: Simplify right side
    199,344,892.80x = 58,804,004,536,648,840
  5. Step 5: Solve for x
    x = 58,804,004,536,648,840/199,344,892.80
  6. Step 6: Final answer
    x = 294,986,260.80

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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.