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Finding the Fourth Proportional to 85,509.34, 128,194.86 and 35,626.97

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Solution

The fourth proportional to 85,509.34, 128,194.86 and 35,626.97 is: 53,411.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,509.34 : 128,194.86 = 35,626.97 : x
  2. Step 2: Convert to fraction form
    85,509.34/128,194.86 = 35,626.97/x
  3. Step 3: Cross multiply
    85,509.34x = 128,194.86 × 35,626.97
  4. Step 4: Simplify right side
    85,509.34x = 4,567,194,431.37
  5. Step 5: Solve for x
    x = 4,567,194,431.37/85,509.34
  6. Step 6: Final answer
    x = 53,411.64

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1.5x scale

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.