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Finding the Fourth Proportional to 110,860.55, 166,332.13 and 66,519.12

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Solution

The fourth proportional to 110,860.55, 166,332.13 and 66,519.12 is: 99,803.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,860.55 : 166,332.13 = 66,519.12 : x
  2. Step 2: Convert to fraction form
    110,860.55/166,332.13 = 66,519.12/x
  3. Step 3: Cross multiply
    110,860.55x = 166,332.13 × 66,519.12
  4. Step 4: Simplify right side
    110,860.55x = 11,064,267,746.94
  5. Step 5: Solve for x
    x = 11,064,267,746.94/110,860.55
  6. Step 6: Final answer
    x = 99,803.47

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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.