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Finding the Third Proportional to 1,290,105,904 and 1,992,191,528

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Solution

The third proportional to 1,290,105,904 and 1,992,191,528 is: 3,076,357,585.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,105,904 : 1,992,191,528 = 1,992,191,528 : x
  2. Step 2: Convert to fraction form
    1,290,105,904/1,992,191,528 = 1,992,191,528/x
  3. Step 3: Cross multiply
    1,290,105,904x = 1,992,191,528 × 1,992,191,528
  4. Step 4: Simplify right side
    1,290,105,904x = 3,968,827,084,234,974,720
  5. Step 5: Solve for x
    x = 3,968,827,084,234,974,720/1,290,105,904
  6. Step 6: Final answer
    x = 3,076,357,585.78

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.