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Finding the Fourth Proportional to 993,938.80, 1,490,908.20 and 895,961.20

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Solution

The fourth proportional to 993,938.80, 1,490,908.20 and 895,961.20 is: 1,343,941.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,938.80 : 1,490,908.20 = 895,961.20 : x
  2. Step 2: Convert to fraction form
    993,938.80/1,490,908.20 = 895,961.20/x
  3. Step 3: Cross multiply
    993,938.80x = 1,490,908.20 × 895,961.20
  4. Step 4: Simplify right side
    993,938.80x = 1,335,795,899,961.84
  5. Step 5: Solve for x
    x = 1,335,795,899,961.84/993,938.80
  6. Step 6: Final answer
    x = 1,343,941.80

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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.