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Finding the Fourth Proportional to 58,401.50, 80,594.08 and 31,905.50

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Solution

The fourth proportional to 58,401.50, 80,594.08 and 31,905.50 is: 44,029.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,401.50 : 80,594.08 = 31,905.50 : x
  2. Step 2: Convert to fraction form
    58,401.50/80,594.08 = 31,905.50/x
  3. Step 3: Cross multiply
    58,401.50x = 80,594.08 × 31,905.50
  4. Step 4: Simplify right side
    58,401.50x = 2,571,394,419.44
  5. Step 5: Solve for x
    x = 2,571,394,419.44/58,401.50
  6. Step 6: Final answer
    x = 44,029.60

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1.5x scale

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.