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Finding the Fourth Proportional to 216,931.26, 325,607.30 and 104,690.46

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Solution

The fourth proportional to 216,931.26, 325,607.30 and 104,690.46 is: 157,137.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,931.26 : 325,607.30 = 104,690.46 : x
  2. Step 2: Convert to fraction form
    216,931.26/325,607.30 = 104,690.46/x
  3. Step 3: Cross multiply
    216,931.26x = 325,607.30 × 104,690.46
  4. Step 4: Simplify right side
    216,931.26x = 34,087,978,016.36
  5. Step 5: Solve for x
    x = 34,087,978,016.36/216,931.26
  6. Step 6: Final answer
    x = 157,137.23

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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.