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Finding the Fourth Proportional to 111,277.44, 153,479.10 and 77,285.97

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Solution

The fourth proportional to 111,277.44, 153,479.10 and 77,285.97 is: 106,596.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,277.44 : 153,479.10 = 77,285.97 : x
  2. Step 2: Convert to fraction form
    111,277.44/153,479.10 = 77,285.97/x
  3. Step 3: Cross multiply
    111,277.44x = 153,479.10 × 77,285.97
  4. Step 4: Simplify right side
    111,277.44x = 11,861,781,118.23
  5. Step 5: Solve for x
    x = 11,861,781,118.23/111,277.44
  6. Step 6: Final answer
    x = 106,596.46

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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.