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Finding the Fourth Proportional to 994,796.40, 1,489,019.40 and 784,844.40

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Solution

The fourth proportional to 994,796.40, 1,489,019.40 and 784,844.40 is: 1,174,761.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,796.40 : 1,489,019.40 = 784,844.40 : x
  2. Step 2: Convert to fraction form
    994,796.40/1,489,019.40 = 784,844.40/x
  3. Step 3: Cross multiply
    994,796.40x = 1,489,019.40 × 784,844.40
  4. Step 4: Simplify right side
    994,796.40x = 1,168,648,537,581.36
  5. Step 5: Solve for x
    x = 1,168,648,537,581.36/994,796.40
  6. Step 6: Final answer
    x = 1,174,761.53

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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.