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Finding the Third Proportional to 936,581 and 1,989,784

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Solution

The third proportional to 936,581 and 1,989,784 is: 4,227,333.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,581 : 1,989,784 = 1,989,784 : x
  2. Step 2: Convert to fraction form
    936,581/1,989,784 = 1,989,784/x
  3. Step 3: Cross multiply
    936,581x = 1,989,784 × 1,989,784
  4. Step 4: Simplify right side
    936,581x = 3,959,240,366,656
  5. Step 5: Solve for x
    x = 3,959,240,366,656/936,581
  6. Step 6: Final answer
    x = 4,227,333.64

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.