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Finding the Fourth Proportional to 933,808.80, 1,400,713.20 and 878,512.80

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Solution

The fourth proportional to 933,808.80, 1,400,713.20 and 878,512.80 is: 1,317,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    933,808.80 : 1,400,713.20 = 878,512.80 : x
  2. Step 2: Convert to fraction form
    933,808.80/1,400,713.20 = 878,512.80/x
  3. Step 3: Cross multiply
    933,808.80x = 1,400,713.20 × 878,512.80
  4. Step 4: Simplify right side
    933,808.80x = 1,230,544,475,328.96
  5. Step 5: Solve for x
    x = 1,230,544,475,328.96/933,808.80
  6. Step 6: Final answer
    x = 1,317,769.20

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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.