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Finding the Third Proportional to 19,128.75 and 29,547

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Solution

The third proportional to 19,128.75 and 29,547 is: 45,639.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.75 : 29,547 = 29,547 : x
  2. Step 2: Convert to fraction form
    19,128.75/29,547 = 29,547/x
  3. Step 3: Cross multiply
    19,128.75x = 29,547 × 29,547
  4. Step 4: Simplify right side
    19,128.75x = 873,025,209
  5. Step 5: Solve for x
    x = 873,025,209/19,128.75
  6. Step 6: Final answer
    x = 45,639.43

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.