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Finding the Fourth Proportional to 111,462.75, 153,814.55 and 63,713.25

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Solution

The fourth proportional to 111,462.75, 153,814.55 and 63,713.25 is: 87,921.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,462.75 : 153,814.55 = 63,713.25 : x
  2. Step 2: Convert to fraction form
    111,462.75/153,814.55 = 63,713.25/x
  3. Step 3: Cross multiply
    111,462.75x = 153,814.55 × 63,713.25
  4. Step 4: Simplify right side
    111,462.75x = 9,800,024,559.22
  5. Step 5: Solve for x
    x = 9,800,024,559.22/111,462.75
  6. Step 6: Final answer
    x = 87,921.97

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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.