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Finding the Fourth Proportional to 863,952.78, 1,294,878.54 and 611,306.09

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Solution

The fourth proportional to 863,952.78, 1,294,878.54 and 611,306.09 is: 916,215.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,952.78 : 1,294,878.54 = 611,306.09 : x
  2. Step 2: Convert to fraction form
    863,952.78/1,294,878.54 = 611,306.09/x
  3. Step 3: Cross multiply
    863,952.78x = 1,294,878.54 × 611,306.09
  4. Step 4: Simplify right side
    863,952.78x = 791,567,130,837.92
  5. Step 5: Solve for x
    x = 791,567,130,837.92/863,952.78
  6. Step 6: Final answer
    x = 916,215.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.