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Finding the Third Proportional to 554,556 and 828,138

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Solution

The third proportional to 554,556 and 828,138 is: 1,236,687.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,556 : 828,138 = 828,138 : x
  2. Step 2: Convert to fraction form
    554,556/828,138 = 828,138/x
  3. Step 3: Cross multiply
    554,556x = 828,138 × 828,138
  4. Step 4: Simplify right side
    554,556x = 685,812,547,044
  5. Step 5: Solve for x
    x = 685,812,547,044/554,556
  6. Step 6: Final answer
    x = 1,236,687.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.