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Finding the Fourth Proportional to 1,576,992, 2,176,248.96 and 861,600

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Solution

The fourth proportional to 1,576,992, 2,176,248.96 and 861,600 is: 1,189,008

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576,992 : 2,176,248.96 = 861,600 : x
  2. Step 2: Convert to fraction form
    1,576,992/2,176,248.96 = 861,600/x
  3. Step 3: Cross multiply
    1,576,992x = 2,176,248.96 × 861,600
  4. Step 4: Simplify right side
    1,576,992x = 1,875,056,103,936
  5. Step 5: Solve for x
    x = 1,875,056,103,936/1,576,992
  6. Step 6: Final answer
    x = 1,189,008

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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.