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Finding the Third Proportional to 42,648.75 and 66,752.25

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Solution

The third proportional to 42,648.75 and 66,752.25 is: 104,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,648.75 : 66,752.25 = 66,752.25 : x
  2. Step 2: Convert to fraction form
    42,648.75/66,752.25 = 66,752.25/x
  3. Step 3: Cross multiply
    42,648.75x = 66,752.25 × 66,752.25
  4. Step 4: Simplify right side
    42,648.75x = 4,455,862,880.06
  5. Step 5: Solve for x
    x = 4,455,862,880.06/42,648.75
  6. Step 6: Final answer
    x = 104,478.16

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.