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Finding the Third Proportional to 100,315 and 133,165.50

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Solution

The third proportional to 100,315 and 133,165.50 is: 176,773.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,315 : 133,165.50 = 133,165.50 : x
  2. Step 2: Convert to fraction form
    100,315/133,165.50 = 133,165.50/x
  3. Step 3: Cross multiply
    100,315x = 133,165.50 × 133,165.50
  4. Step 4: Simplify right side
    100,315x = 17,733,050,390.25
  5. Step 5: Solve for x
    x = 17,733,050,390.25/100,315
  6. Step 6: Final answer
    x = 176,773.67

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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.