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Finding the Fourth Proportional to 111,146.39, 153,399.95 and 82,655.25

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Solution

The fourth proportional to 111,146.39, 153,399.95 and 82,655.25 is: 114,077.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,146.39 : 153,399.95 = 82,655.25 : x
  2. Step 2: Convert to fraction form
    111,146.39/153,399.95 = 82,655.25/x
  3. Step 3: Cross multiply
    111,146.39x = 153,399.95 × 82,655.25
  4. Step 4: Simplify right side
    111,146.39x = 12,679,311,217.24
  5. Step 5: Solve for x
    x = 12,679,311,217.24/111,146.39
  6. Step 6: Final answer
    x = 114,077.58

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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.