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Finding the Fourth Proportional to 249,398.87, 374,247.35 and 91,643.27

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Solution

The fourth proportional to 249,398.87, 374,247.35 and 91,643.27 is: 137,519.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,398.87 : 374,247.35 = 91,643.27 : x
  2. Step 2: Convert to fraction form
    249,398.87/374,247.35 = 91,643.27/x
  3. Step 3: Cross multiply
    249,398.87x = 374,247.35 × 91,643.27
  4. Step 4: Simplify right side
    249,398.87x = 34,297,252,107.56
  5. Step 5: Solve for x
    x = 34,297,252,107.56/249,398.87
  6. Step 6: Final answer
    x = 137,519.68

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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.