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Finding the Fourth Proportional to 85,063.52, 127,609.32 and 25,885.64

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Solution

The fourth proportional to 85,063.52, 127,609.32 and 25,885.64 is: 38,832.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,063.52 : 127,609.32 = 25,885.64 : x
  2. Step 2: Convert to fraction form
    85,063.52/127,609.32 = 25,885.64/x
  3. Step 3: Cross multiply
    85,063.52x = 127,609.32 × 25,885.64
  4. Step 4: Simplify right side
    85,063.52x = 3,303,248,918.16
  5. Step 5: Solve for x
    x = 3,303,248,918.16/85,063.52
  6. Step 6: Final answer
    x = 38,832.73

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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.