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Finding the Third Proportional to 30,658.50 and 47,628

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Solution

The third proportional to 30,658.50 and 47,628 is: 73,990.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,658.50 : 47,628 = 47,628 : x
  2. Step 2: Convert to fraction form
    30,658.50/47,628 = 47,628/x
  3. Step 3: Cross multiply
    30,658.50x = 47,628 × 47,628
  4. Step 4: Simplify right side
    30,658.50x = 2,268,426,384
  5. Step 5: Solve for x
    x = 2,268,426,384/30,658.50
  6. Step 6: Final answer
    x = 73,990.13

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.