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Finding the Fourth Proportional to 1,336,653.78, 1,844,411.73 and 763,731.06

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Solution

The fourth proportional to 1,336,653.78, 1,844,411.73 and 763,731.06 is: 1,053,851.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336,653.78 : 1,844,411.73 = 763,731.06 : x
  2. Step 2: Convert to fraction form
    1,336,653.78/1,844,411.73 = 763,731.06/x
  3. Step 3: Cross multiply
    1,336,653.78x = 1,844,411.73 × 763,731.06
  4. Step 4: Simplify right side
    1,336,653.78x = 1,408,634,525,629.33
  5. Step 5: Solve for x
    x = 1,408,634,525,629.33/1,336,653.78
  6. Step 6: Final answer
    x = 1,053,851.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.