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Finding the Fourth Proportional to 10,867,187.80, 16,300,781.70 and 3,293,169.40

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Solution

The fourth proportional to 10,867,187.80, 16,300,781.70 and 3,293,169.40 is: 4,939,754.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,867,187.80 : 16,300,781.70 = 3,293,169.40 : x
  2. Step 2: Convert to fraction form
    10,867,187.80/16,300,781.70 = 3,293,169.40/x
  3. Step 3: Cross multiply
    10,867,187.80x = 16,300,781.70 × 3,293,169.40
  4. Step 4: Simplify right side
    10,867,187.80x = 53,681,235,490,519.98
  5. Step 5: Solve for x
    x = 53,681,235,490,519.98/10,867,187.80
  6. Step 6: Final answer
    x = 4,939,754.10

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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.