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Finding the Fourth Proportional to 1,789,840.88, 2,469,985.32 and 985,024.88

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Solution

The fourth proportional to 1,789,840.88, 2,469,985.32 and 985,024.88 is: 1,359,337.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789,840.88 : 2,469,985.32 = 985,024.88 : x
  2. Step 2: Convert to fraction form
    1,789,840.88/2,469,985.32 = 985,024.88/x
  3. Step 3: Cross multiply
    1,789,840.88x = 2,469,985.32 × 985,024.88
  4. Step 4: Simplify right side
    1,789,840.88x = 2,432,996,993,434.76
  5. Step 5: Solve for x
    x = 2,432,996,993,434.76/1,789,840.88
  6. Step 6: Final answer
    x = 1,359,337.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.