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Finding the Fourth Proportional to 85,322.44, 127,884 and 64,194.60

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Solution

The fourth proportional to 85,322.44, 127,884 and 64,194.60 is: 96,216.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,322.44 : 127,884 = 64,194.60 : x
  2. Step 2: Convert to fraction form
    85,322.44/127,884 = 64,194.60/x
  3. Step 3: Cross multiply
    85,322.44x = 127,884 × 64,194.60
  4. Step 4: Simplify right side
    85,322.44x = 8,209,462,226.40
  5. Step 5: Solve for x
    x = 8,209,462,226.40/85,322.44
  6. Step 6: Final answer
    x = 96,216.92

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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.