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Finding the Fourth Proportional to 249,660.33, 344,530.58 and 142,230.57

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Solution

The fourth proportional to 249,660.33, 344,530.58 and 142,230.57 is: 196,277.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,660.33 : 344,530.58 = 142,230.57 : x
  2. Step 2: Convert to fraction form
    249,660.33/344,530.58 = 142,230.57/x
  3. Step 3: Cross multiply
    249,660.33x = 344,530.58 × 142,230.57
  4. Step 4: Simplify right side
    249,660.33x = 49,002,780,064.68
  5. Step 5: Solve for x
    x = 49,002,780,064.68/249,660.33
  6. Step 6: Final answer
    x = 196,277.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.