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Finding the Third Proportional to 368,792 and 556,578

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Solution

The third proportional to 368,792 and 556,578 is: 839,983.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,792 : 556,578 = 556,578 : x
  2. Step 2: Convert to fraction form
    368,792/556,578 = 556,578/x
  3. Step 3: Cross multiply
    368,792x = 556,578 × 556,578
  4. Step 4: Simplify right side
    368,792x = 309,779,070,084
  5. Step 5: Solve for x
    x = 309,779,070,084/368,792
  6. Step 6: Final answer
    x = 839,983.16

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.