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Finding the Third Proportional to 74,772.75 and 114,931

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Solution

The third proportional to 74,772.75 and 114,931 is: 176,657.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,772.75 : 114,931 = 114,931 : x
  2. Step 2: Convert to fraction form
    74,772.75/114,931 = 114,931/x
  3. Step 3: Cross multiply
    74,772.75x = 114,931 × 114,931
  4. Step 4: Simplify right side
    74,772.75x = 13,209,134,761
  5. Step 5: Solve for x
    x = 13,209,134,761/74,772.75
  6. Step 6: Final answer
    x = 176,657.07

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.