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Finding the Fourth Proportional to 1,215,576, 1,677,494.88 and 679,032

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Solution

The fourth proportional to 1,215,576, 1,677,494.88 and 679,032 is: 937,064.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,576 : 1,677,494.88 = 679,032 : x
  2. Step 2: Convert to fraction form
    1,215,576/1,677,494.88 = 679,032/x
  3. Step 3: Cross multiply
    1,215,576x = 1,677,494.88 × 679,032
  4. Step 4: Simplify right side
    1,215,576x = 1,139,072,703,356.16
  5. Step 5: Solve for x
    x = 1,139,072,703,356.16/1,215,576
  6. Step 6: Final answer
    x = 937,064.16

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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.