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Finding the Third Proportional to 990,724 and 1,574,480

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Solution

The third proportional to 990,724 and 1,574,480 is: 2,502,197.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,724 : 1,574,480 = 1,574,480 : x
  2. Step 2: Convert to fraction form
    990,724/1,574,480 = 1,574,480/x
  3. Step 3: Cross multiply
    990,724x = 1,574,480 × 1,574,480
  4. Step 4: Simplify right side
    990,724x = 2,478,987,270,400
  5. Step 5: Solve for x
    x = 2,478,987,270,400/990,724
  6. Step 6: Final answer
    x = 2,502,197.66

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.