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Finding the Fourth Proportional to 57,216.70, 85,825.05 and 38,554.30

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Solution

The fourth proportional to 57,216.70, 85,825.05 and 38,554.30 is: 57,831.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,216.70 : 85,825.05 = 38,554.30 : x
  2. Step 2: Convert to fraction form
    57,216.70/85,825.05 = 38,554.30/x
  3. Step 3: Cross multiply
    57,216.70x = 85,825.05 × 38,554.30
  4. Step 4: Simplify right side
    57,216.70x = 3,308,924,725.22
  5. Step 5: Solve for x
    x = 3,308,924,725.22/57,216.70
  6. Step 6: Final answer
    x = 57,831.45

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Similar ratio
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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.