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Finding the Fourth Proportional to 213,903.99, 294,528.15 and 189,989.15

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Solution

The fourth proportional to 213,903.99, 294,528.15 and 189,989.15 is: 261,599.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,903.99 : 294,528.15 = 189,989.15 : x
  2. Step 2: Convert to fraction form
    213,903.99/294,528.15 = 189,989.15/x
  3. Step 3: Cross multiply
    213,903.99x = 294,528.15 × 189,989.15
  4. Step 4: Simplify right side
    213,903.99x = 55,957,151,396.93
  5. Step 5: Solve for x
    x = 55,957,151,396.93/213,903.99
  6. Step 6: Final answer
    x = 261,599.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.