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Finding the Fourth Proportional to 415,059.60, 622,589.40 and 310,083.60

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Solution

The fourth proportional to 415,059.60, 622,589.40 and 310,083.60 is: 465,125.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,059.60 : 622,589.40 = 310,083.60 : x
  2. Step 2: Convert to fraction form
    415,059.60/622,589.40 = 310,083.60/x
  3. Step 3: Cross multiply
    415,059.60x = 622,589.40 × 310,083.60
  4. Step 4: Simplify right side
    415,059.60x = 193,054,762,473.84
  5. Step 5: Solve for x
    x = 193,054,762,473.84/415,059.60
  6. Step 6: Final answer
    x = 465,125.40

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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.