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Finding the Third Proportional to 45,315 and 60,480

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Solution

The third proportional to 45,315 and 60,480 is: 80,720.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,315 : 60,480 = 60,480 : x
  2. Step 2: Convert to fraction form
    45,315/60,480 = 60,480/x
  3. Step 3: Cross multiply
    45,315x = 60,480 × 60,480
  4. Step 4: Simplify right side
    45,315x = 3,657,830,400
  5. Step 5: Solve for x
    x = 3,657,830,400/45,315
  6. Step 6: Final answer
    x = 80,720.08

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.