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Finding the Third Proportional to 375,990.61 and 811,916.16

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Solution

The third proportional to 375,990.61 and 811,916.16 is: 1,753,256.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,990.61 : 811,916.16 = 811,916.16 : x
  2. Step 2: Convert to fraction form
    375,990.61/811,916.16 = 811,916.16/x
  3. Step 3: Cross multiply
    375,990.61x = 811,916.16 × 811,916.16
  4. Step 4: Simplify right side
    375,990.61x = 659,207,844,779.77
  5. Step 5: Solve for x
    x = 659,207,844,779.77/375,990.61
  6. Step 6: Final answer
    x = 1,753,256.14

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.