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Finding the Fourth Proportional to 216,913.95, 325,254.29 and 67,089.87

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Solution

The fourth proportional to 216,913.95, 325,254.29 and 67,089.87 is: 100,598.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,913.95 : 325,254.29 = 67,089.87 : x
  2. Step 2: Convert to fraction form
    216,913.95/325,254.29 = 67,089.87/x
  3. Step 3: Cross multiply
    216,913.95x = 325,254.29 × 67,089.87
  4. Step 4: Simplify right side
    216,913.95x = 21,821,267,697.59
  5. Step 5: Solve for x
    x = 21,821,267,697.59/216,913.95
  6. Step 6: Final answer
    x = 100,598.73

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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.