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Finding the Fourth Proportional to 111,786.76, 154,258.86 and 64,029.16

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Solution

The fourth proportional to 111,786.76, 154,258.86 and 64,029.16 is: 88,356.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,786.76 : 154,258.86 = 64,029.16 : x
  2. Step 2: Convert to fraction form
    111,786.76/154,258.86 = 64,029.16/x
  3. Step 3: Cross multiply
    111,786.76x = 154,258.86 × 64,029.16
  4. Step 4: Simplify right side
    111,786.76x = 9,877,065,228.36
  5. Step 5: Solve for x
    x = 9,877,065,228.36/111,786.76
  6. Step 6: Final answer
    x = 88,356.31

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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.