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Finding the Fourth Proportional to 58,015.20, 87,022.80 and 39,583.20

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Solution

The fourth proportional to 58,015.20, 87,022.80 and 39,583.20 is: 59,374.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,015.20 : 87,022.80 = 39,583.20 : x
  2. Step 2: Convert to fraction form
    58,015.20/87,022.80 = 39,583.20/x
  3. Step 3: Cross multiply
    58,015.20x = 87,022.80 × 39,583.20
  4. Step 4: Simplify right side
    58,015.20x = 3,444,640,896.96
  5. Step 5: Solve for x
    x = 3,444,640,896.96/58,015.20
  6. Step 6: Final answer
    x = 59,374.80

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1.5x scale

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.