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Finding the Fourth Proportional to 993,942.80, 1,490,914.20 and 895,965.20

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Solution

The fourth proportional to 993,942.80, 1,490,914.20 and 895,965.20 is: 1,343,947.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,942.80 : 1,490,914.20 = 895,965.20 : x
  2. Step 2: Convert to fraction form
    993,942.80/1,490,914.20 = 895,965.20/x
  3. Step 3: Cross multiply
    993,942.80x = 1,490,914.20 × 895,965.20
  4. Step 4: Simplify right side
    993,942.80x = 1,335,807,239,385.84
  5. Step 5: Solve for x
    x = 1,335,807,239,385.84/993,942.80
  6. Step 6: Final answer
    x = 1,343,947.80

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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.