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Finding the Fourth Proportional to 216,811.16, 325,355.55 and 117,040.82

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Solution

The fourth proportional to 216,811.16, 325,355.55 and 117,040.82 is: 175,636.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,811.16 : 325,355.55 = 117,040.82 : x
  2. Step 2: Convert to fraction form
    216,811.16/325,355.55 = 117,040.82/x
  3. Step 3: Cross multiply
    216,811.16x = 325,355.55 × 117,040.82
  4. Step 4: Simplify right side
    216,811.16x = 38,079,880,884.34
  5. Step 5: Solve for x
    x = 38,079,880,884.34/216,811.16
  6. Step 6: Final answer
    x = 175,636.17

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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.