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Finding the Fourth Proportional to 38,485.30, 53,748.20 and 38,485.30

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Solution

The fourth proportional to 38,485.30, 53,748.20 and 38,485.30 is: 53,748.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,485.30 : 53,748.20 = 38,485.30 : x
  2. Step 2: Convert to fraction form
    38,485.30/53,748.20 = 38,485.30/x
  3. Step 3: Cross multiply
    38,485.30x = 53,748.20 × 38,485.30
  4. Step 4: Simplify right side
    38,485.30x = 2,068,515,601.46
  5. Step 5: Solve for x
    x = 2,068,515,601.46/38,485.30
  6. Step 6: Final answer
    x = 53,748.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.