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Finding the Third Proportional to 74,644 and 115,572

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Solution

The third proportional to 74,644 and 115,572 is: 178,941.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,644 : 115,572 = 115,572 : x
  2. Step 2: Convert to fraction form
    74,644/115,572 = 115,572/x
  3. Step 3: Cross multiply
    74,644x = 115,572 × 115,572
  4. Step 4: Simplify right side
    74,644x = 13,356,887,184
  5. Step 5: Solve for x
    x = 13,356,887,184/74,644
  6. Step 6: Final answer
    x = 178,941.20

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.