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Finding the Fourth Proportional to 19,388.54, 29,085.87 and 8,295.30

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Solution

The fourth proportional to 19,388.54, 29,085.87 and 8,295.30 is: 12,444.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,388.54 : 29,085.87 = 8,295.30 : x
  2. Step 2: Convert to fraction form
    19,388.54/29,085.87 = 8,295.30/x
  3. Step 3: Cross multiply
    19,388.54x = 29,085.87 × 8,295.30
  4. Step 4: Simplify right side
    19,388.54x = 241,276,017.41
  5. Step 5: Solve for x
    x = 241,276,017.41/19,388.54
  6. Step 6: Final answer
    x = 12,444.26

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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.