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Finding the Third Proportional to 19,924 and 29,310

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Solution

The third proportional to 19,924 and 29,310 is: 43,117.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,924 : 29,310 = 29,310 : x
  2. Step 2: Convert to fraction form
    19,924/29,310 = 29,310/x
  3. Step 3: Cross multiply
    19,924x = 29,310 × 29,310
  4. Step 4: Simplify right side
    19,924x = 859,076,100
  5. Step 5: Solve for x
    x = 859,076,100/19,924
  6. Step 6: Final answer
    x = 43,117.65

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.