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Finding the Fourth Proportional to 85,432.51, 117,896.39 and 47,194.68

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Solution

The fourth proportional to 85,432.51, 117,896.39 and 47,194.68 is: 65,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,432.51 : 117,896.39 = 47,194.68 : x
  2. Step 2: Convert to fraction form
    85,432.51/117,896.39 = 47,194.68/x
  3. Step 3: Cross multiply
    85,432.51x = 117,896.39 × 47,194.68
  4. Step 4: Simplify right side
    85,432.51x = 5,564,082,399.21
  5. Step 5: Solve for x
    x = 5,564,082,399.21/85,432.51
  6. Step 6: Final answer
    x = 65,128.40

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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.