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Finding the Third Proportional to 57,428 and 84,498

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Solution

The third proportional to 57,428 and 84,498 is: 124,328.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,428 : 84,498 = 84,498 : x
  2. Step 2: Convert to fraction form
    57,428/84,498 = 84,498/x
  3. Step 3: Cross multiply
    57,428x = 84,498 × 84,498
  4. Step 4: Simplify right side
    57,428x = 7,139,912,004
  5. Step 5: Solve for x
    x = 7,139,912,004/57,428
  6. Step 6: Final answer
    x = 124,328.06

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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.