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Finding the Fourth Proportional to 216,860.95, 325,402.61 and 104,636.87

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Solution

The fourth proportional to 216,860.95, 325,402.61 and 104,636.87 is: 157,008.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,860.95 : 325,402.61 = 104,636.87 : x
  2. Step 2: Convert to fraction form
    216,860.95/325,402.61 = 104,636.87/x
  3. Step 3: Cross multiply
    216,860.95x = 325,402.61 × 104,636.87
  4. Step 4: Simplify right side
    216,860.95x = 34,049,108,450.03
  5. Step 5: Solve for x
    x = 34,049,108,450.03/216,860.95
  6. Step 6: Final answer
    x = 157,008.94

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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.