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Finding the Fourth Proportional to 966,603.90, 1,449,905.85 and 919,947.90

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Solution

The fourth proportional to 966,603.90, 1,449,905.85 and 919,947.90 is: 1,379,921.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    966,603.90 : 1,449,905.85 = 919,947.90 : x
  2. Step 2: Convert to fraction form
    966,603.90/1,449,905.85 = 919,947.90/x
  3. Step 3: Cross multiply
    966,603.90x = 1,449,905.85 × 919,947.90
  4. Step 4: Simplify right side
    966,603.90x = 1,333,837,841,905.22
  5. Step 5: Solve for x
    x = 1,333,837,841,905.22/966,603.90
  6. Step 6: Final answer
    x = 1,379,921.85

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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.