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Finding the Third Proportional to 29,386.50 and 64,290

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Solution

The third proportional to 29,386.50 and 64,290 is: 140,649.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,386.50 : 64,290 = 64,290 : x
  2. Step 2: Convert to fraction form
    29,386.50/64,290 = 64,290/x
  3. Step 3: Cross multiply
    29,386.50x = 64,290 × 64,290
  4. Step 4: Simplify right side
    29,386.50x = 4,133,204,100
  5. Step 5: Solve for x
    x = 4,133,204,100/29,386.50
  6. Step 6: Final answer
    x = 140,649.76

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.