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Finding the Fourth Proportional to 111,965.04, 167,128.38 and 98,679.48

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Solution

The fourth proportional to 111,965.04, 167,128.38 and 98,679.48 is: 147,297.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,965.04 : 167,128.38 = 98,679.48 : x
  2. Step 2: Convert to fraction form
    111,965.04/167,128.38 = 98,679.48/x
  3. Step 3: Cross multiply
    111,965.04x = 167,128.38 × 98,679.48
  4. Step 4: Simplify right side
    111,965.04x = 16,492,141,631.64
  5. Step 5: Solve for x
    x = 16,492,141,631.64/111,965.04
  6. Step 6: Final answer
    x = 147,297.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.