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Finding the Fourth Proportional to 111,606.66, 154,019.90 and 63,875.39

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Solution

The fourth proportional to 111,606.66, 154,019.90 and 63,875.39 is: 88,149.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,606.66 : 154,019.90 = 63,875.39 : x
  2. Step 2: Convert to fraction form
    111,606.66/154,019.90 = 63,875.39/x
  3. Step 3: Cross multiply
    111,606.66x = 154,019.90 × 63,875.39
  4. Step 4: Simplify right side
    111,606.66x = 9,838,080,569.85
  5. Step 5: Solve for x
    x = 9,838,080,569.85/111,606.66
  6. Step 6: Final answer
    x = 88,149.58

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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.