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Finding the Fourth Proportional to 249,939, 344,915.82 and 136,761.75

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Solution

The fourth proportional to 249,939, 344,915.82 and 136,761.75 is: 188,731.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,939 : 344,915.82 = 136,761.75 : x
  2. Step 2: Convert to fraction form
    249,939/344,915.82 = 136,761.75/x
  3. Step 3: Cross multiply
    249,939x = 344,915.82 × 136,761.75
  4. Step 4: Simplify right side
    249,939x = 47,171,291,145.89
  5. Step 5: Solve for x
    x = 47,171,291,145.89/249,939
  6. Step 6: Final answer
    x = 188,731.22

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1.5x scale

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.