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Finding the Fourth Proportional to 85,236.72, 117,628.22 and 47,506.92

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Solution

The fourth proportional to 85,236.72, 117,628.22 and 47,506.92 is: 65,560.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,236.72 : 117,628.22 = 47,506.92 : x
  2. Step 2: Convert to fraction form
    85,236.72/117,628.22 = 47,506.92/x
  3. Step 3: Cross multiply
    85,236.72x = 117,628.22 × 47,506.92
  4. Step 4: Simplify right side
    85,236.72x = 5,588,154,437.28
  5. Step 5: Solve for x
    x = 5,588,154,437.28/85,236.72
  6. Step 6: Final answer
    x = 65,560.41

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Double scale
Find fourth proportional to 85,237.72, 117,629.60 and 47,507.92
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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.