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Finding the Fourth Proportional to 38,353.60, 52,927.86 and 21,586.60

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Solution

The fourth proportional to 38,353.60, 52,927.86 and 21,586.60 is: 29,789.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,353.60 : 52,927.86 = 21,586.60 : x
  2. Step 2: Convert to fraction form
    38,353.60/52,927.86 = 21,586.60/x
  3. Step 3: Cross multiply
    38,353.60x = 52,927.86 × 21,586.60
  4. Step 4: Simplify right side
    38,353.60x = 1,142,532,542.68
  5. Step 5: Solve for x
    x = 1,142,532,542.68/38,353.60
  6. Step 6: Final answer
    x = 29,789.45

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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.