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Finding the Fourth Proportional to 692,751.44, 1,039,457.40 and 479,847.44

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Solution

The fourth proportional to 692,751.44, 1,039,457.40 and 479,847.44 is: 719,999.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,751.44 : 1,039,457.40 = 479,847.44 : x
  2. Step 2: Convert to fraction form
    692,751.44/1,039,457.40 = 479,847.44/x
  3. Step 3: Cross multiply
    692,751.44x = 1,039,457.40 × 479,847.44
  4. Step 4: Simplify right side
    692,751.44x = 498,780,972,379.06
  5. Step 5: Solve for x
    x = 498,780,972,379.06/692,751.44
  6. Step 6: Final answer
    x = 719,999.91

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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.