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Finding the Fourth Proportional to 43,187.65, 64,800.29 and 15,127.87

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Solution

The fourth proportional to 43,187.65, 64,800.29 and 15,127.87 is: 22,698.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,187.65 : 64,800.29 = 15,127.87 : x
  2. Step 2: Convert to fraction form
    43,187.65/64,800.29 = 15,127.87/x
  3. Step 3: Cross multiply
    43,187.65x = 64,800.29 × 15,127.87
  4. Step 4: Simplify right side
    43,187.65x = 980,290,363.08
  5. Step 5: Solve for x
    x = 980,290,363.08/43,187.65
  6. Step 6: Final answer
    x = 22,698.40

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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.