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Finding the Third Proportional to 148,938.75 and 208,342.13

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Solution

The third proportional to 148,938.75 and 208,342.13 is: 291,438.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,938.75 : 208,342.13 = 208,342.13 : x
  2. Step 2: Convert to fraction form
    148,938.75/208,342.13 = 208,342.13/x
  3. Step 3: Cross multiply
    148,938.75x = 208,342.13 × 208,342.13
  4. Step 4: Simplify right side
    148,938.75x = 43,406,441,049.52
  5. Step 5: Solve for x
    x = 43,406,441,049.52/148,938.75
  6. Step 6: Final answer
    x = 291,438.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.