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Finding the Fourth Proportional to 47,485.66, 71,186.48 and 40,510.48

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Solution

The fourth proportional to 47,485.66, 71,186.48 and 40,510.48 is: 60,729.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,485.66 : 71,186.48 = 40,510.48 : x
  2. Step 2: Convert to fraction form
    47,485.66/71,186.48 = 40,510.48/x
  3. Step 3: Cross multiply
    47,485.66x = 71,186.48 × 40,510.48
  4. Step 4: Simplify right side
    47,485.66x = 2,883,798,474.31
  5. Step 5: Solve for x
    x = 2,883,798,474.31/47,485.66
  6. Step 6: Final answer
    x = 60,729.88

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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.