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Finding the Fourth Proportional to 1,835,905.64, 2,754,936.30 and 770,865.80

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Solution

The fourth proportional to 1,835,905.64, 2,754,936.30 and 770,865.80 is: 1,156,751.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,835,905.64 : 2,754,936.30 = 770,865.80 : x
  2. Step 2: Convert to fraction form
    1,835,905.64/2,754,936.30 = 770,865.80/x
  3. Step 3: Cross multiply
    1,835,905.64x = 2,754,936.30 × 770,865.80
  4. Step 4: Simplify right side
    1,835,905.64x = 2,123,686,174,848.54
  5. Step 5: Solve for x
    x = 2,123,686,174,848.54/1,835,905.64
  6. Step 6: Final answer
    x = 1,156,751.27

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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.