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Finding the Fourth Proportional to 249,308.84, 344,046.18 and 136,131.68

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Solution

The fourth proportional to 249,308.84, 344,046.18 and 136,131.68 is: 187,861.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,308.84 : 344,046.18 = 136,131.68 : x
  2. Step 2: Convert to fraction form
    249,308.84/344,046.18 = 136,131.68/x
  3. Step 3: Cross multiply
    249,308.84x = 344,046.18 × 136,131.68
  4. Step 4: Simplify right side
    249,308.84x = 46,835,584,480.98
  5. Step 5: Solve for x
    x = 46,835,584,480.98/249,308.84
  6. Step 6: Final answer
    x = 187,861.71

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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.