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Finding the Fourth Proportional to 85,267.20, 117,425.52 and 83,435.52

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Solution

The fourth proportional to 85,267.20, 117,425.52 and 83,435.52 is: 114,903.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,267.20 : 117,425.52 = 83,435.52 : x
  2. Step 2: Convert to fraction form
    85,267.20/117,425.52 = 83,435.52/x
  3. Step 3: Cross multiply
    85,267.20x = 117,425.52 × 83,435.52
  4. Step 4: Simplify right side
    85,267.20x = 9,797,459,322.47
  5. Step 5: Solve for x
    x = 9,797,459,322.47/85,267.20
  6. Step 6: Final answer
    x = 114,903.03

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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.