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Finding the Fourth Proportional to 249,872.27, 374,808.39 and 72,379.31

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Solution

The fourth proportional to 249,872.27, 374,808.39 and 72,379.31 is: 108,568.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,872.27 : 374,808.39 = 72,379.31 : x
  2. Step 2: Convert to fraction form
    249,872.27/374,808.39 = 72,379.31/x
  3. Step 3: Cross multiply
    249,872.27x = 374,808.39 × 72,379.31
  4. Step 4: Simplify right side
    249,872.27x = 27,128,372,650.41
  5. Step 5: Solve for x
    x = 27,128,372,650.41/249,872.27
  6. Step 6: Final answer
    x = 108,568.96

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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.