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Finding the Third Proportional to 3,886.31 and 6,210.84

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Solution

The third proportional to 3,886.31 and 6,210.84 is: 9,925.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.31 : 6,210.84 = 6,210.84 : x
  2. Step 2: Convert to fraction form
    3,886.31/6,210.84 = 6,210.84/x
  3. Step 3: Cross multiply
    3,886.31x = 6,210.84 × 6,210.84
  4. Step 4: Simplify right side
    3,886.31x = 38,574,580.09
  5. Step 5: Solve for x
    x = 38,574,580.09/3,886.31
  6. Step 6: Final answer
    x = 9,925.75

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.