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Finding the Fourth Proportional to 110,859.60, 166,289.40 and 66,536.40

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Solution

The fourth proportional to 110,859.60, 166,289.40 and 66,536.40 is: 99,804.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,859.60 : 166,289.40 = 66,536.40 : x
  2. Step 2: Convert to fraction form
    110,859.60/166,289.40 = 66,536.40/x
  3. Step 3: Cross multiply
    110,859.60x = 166,289.40 × 66,536.40
  4. Step 4: Simplify right side
    110,859.60x = 11,064,298,034.16
  5. Step 5: Solve for x
    x = 11,064,298,034.16/110,859.60
  6. Step 6: Final answer
    x = 99,804.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.