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Finding the Fourth Proportional to 199,918.88, 299,730.16 and 121,014.44

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Solution

The fourth proportional to 199,918.88, 299,730.16 and 121,014.44 is: 181,431.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,918.88 : 299,730.16 = 121,014.44 : x
  2. Step 2: Convert to fraction form
    199,918.88/299,730.16 = 121,014.44/x
  3. Step 3: Cross multiply
    199,918.88x = 299,730.16 × 121,014.44
  4. Step 4: Simplify right side
    199,918.88x = 36,271,677,463.51
  5. Step 5: Solve for x
    x = 36,271,677,463.51/199,918.88
  6. Step 6: Final answer
    x = 181,431.98

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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.