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Finding the Fourth Proportional to 40,567.81, 60,851.87 and 12,865.81

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Solution

The fourth proportional to 40,567.81, 60,851.87 and 12,865.81 is: 19,298.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,567.81 : 60,851.87 = 12,865.81 : x
  2. Step 2: Convert to fraction form
    40,567.81/60,851.87 = 12,865.81/x
  3. Step 3: Cross multiply
    40,567.81x = 60,851.87 × 12,865.81
  4. Step 4: Simplify right side
    40,567.81x = 782,908,597.56
  5. Step 5: Solve for x
    x = 782,908,597.56/40,567.81
  6. Step 6: Final answer
    x = 19,298.76

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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.