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Finding the Fourth Proportional to 48,417.40, 66,844.02 and 31,679.56

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Solution

The fourth proportional to 48,417.40, 66,844.02 and 31,679.56 is: 43,736.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,417.40 : 66,844.02 = 31,679.56 : x
  2. Step 2: Convert to fraction form
    48,417.40/66,844.02 = 31,679.56/x
  3. Step 3: Cross multiply
    48,417.40x = 66,844.02 × 31,679.56
  4. Step 4: Simplify right side
    48,417.40x = 2,117,589,142.23
  5. Step 5: Solve for x
    x = 2,117,589,142.23/48,417.40
  6. Step 6: Final answer
    x = 43,736.12

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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.