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Finding the Fourth Proportional to 863,406.80, 1,295,110.20 and 705,813.20

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Solution

The fourth proportional to 863,406.80, 1,295,110.20 and 705,813.20 is: 1,058,719.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,406.80 : 1,295,110.20 = 705,813.20 : x
  2. Step 2: Convert to fraction form
    863,406.80/1,295,110.20 = 705,813.20/x
  3. Step 3: Cross multiply
    863,406.80x = 1,295,110.20 × 705,813.20
  4. Step 4: Simplify right side
    863,406.80x = 914,105,874,614.64
  5. Step 5: Solve for x
    x = 914,105,874,614.64/863,406.80
  6. Step 6: Final answer
    x = 1,058,719.80

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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.