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Finding the Fourth Proportional to 216,736.40, 325,007.40 and 83,572.40

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Solution

The fourth proportional to 216,736.40, 325,007.40 and 83,572.40 is: 125,321.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,736.40 : 325,007.40 = 83,572.40 : x
  2. Step 2: Convert to fraction form
    216,736.40/325,007.40 = 83,572.40/x
  3. Step 3: Cross multiply
    216,736.40x = 325,007.40 × 83,572.40
  4. Step 4: Simplify right side
    216,736.40x = 27,161,648,435.76
  5. Step 5: Solve for x
    x = 27,161,648,435.76/216,736.40
  6. Step 6: Final answer
    x = 125,321.12

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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.