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Finding the Fourth Proportional to 111,806.88, 154,300.80 and 64,059.36

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Solution

The fourth proportional to 111,806.88, 154,300.80 and 64,059.36 is: 88,406.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,806.88 : 154,300.80 = 64,059.36 : x
  2. Step 2: Convert to fraction form
    111,806.88/154,300.80 = 64,059.36/x
  3. Step 3: Cross multiply
    111,806.88x = 154,300.80 × 64,059.36
  4. Step 4: Simplify right side
    111,806.88x = 9,884,410,495.49
  5. Step 5: Solve for x
    x = 9,884,410,495.49/111,806.88
  6. Step 6: Final answer
    x = 88,406.10

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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.