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Finding the Fourth Proportional to 1,294,905.72, 1,786,983.22 and 714,149.70

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Solution

The fourth proportional to 1,294,905.72, 1,786,983.22 and 714,149.70 is: 985,533.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,905.72 : 1,786,983.22 = 714,149.70 : x
  2. Step 2: Convert to fraction form
    1,294,905.72/1,786,983.22 = 714,149.70/x
  3. Step 3: Cross multiply
    1,294,905.72x = 1,786,983.22 × 714,149.70
  4. Step 4: Simplify right side
    1,294,905.72x = 1,276,173,524,659.53
  5. Step 5: Solve for x
    x = 1,276,173,524,659.53/1,294,905.72
  6. Step 6: Final answer
    x = 985,533.93

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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.