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Finding the Fourth Proportional to 422,991, 583,779.42 and 244,143

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Solution

The fourth proportional to 422,991, 583,779.42 and 244,143 is: 336,947.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,991 : 583,779.42 = 244,143 : x
  2. Step 2: Convert to fraction form
    422,991/583,779.42 = 244,143/x
  3. Step 3: Cross multiply
    422,991x = 583,779.42 × 244,143
  4. Step 4: Simplify right side
    422,991x = 142,525,658,937.06
  5. Step 5: Solve for x
    x = 142,525,658,937.06/422,991
  6. Step 6: Final answer
    x = 336,947.26

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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.