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Finding the Fourth Proportional to 253,706.31, 350,114.87 and 138,989.13

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Solution

The fourth proportional to 253,706.31, 350,114.87 and 138,989.13 is: 191,805.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,706.31 : 350,114.87 = 138,989.13 : x
  2. Step 2: Convert to fraction form
    253,706.31/350,114.87 = 138,989.13/x
  3. Step 3: Cross multiply
    253,706.31x = 350,114.87 × 138,989.13
  4. Step 4: Simplify right side
    253,706.31x = 48,662,161,181.36
  5. Step 5: Solve for x
    x = 48,662,161,181.36/253,706.31
  6. Step 6: Final answer
    x = 191,805.09

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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.