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Finding the Third Proportional to 53,352 and 78,988

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Solution

The third proportional to 53,352 and 78,988 is: 116,942.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,352 : 78,988 = 78,988 : x
  2. Step 2: Convert to fraction form
    53,352/78,988 = 78,988/x
  3. Step 3: Cross multiply
    53,352x = 78,988 × 78,988
  4. Step 4: Simplify right side
    53,352x = 6,239,104,144
  5. Step 5: Solve for x
    x = 6,239,104,144/53,352
  6. Step 6: Final answer
    x = 116,942.27

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.