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Finding the Fourth Proportional to 289,137.03, 399,190.22 and 185,813.13

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Solution

The fourth proportional to 289,137.03, 399,190.22 and 185,813.13 is: 256,538.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,137.03 : 399,190.22 = 185,813.13 : x
  2. Step 2: Convert to fraction form
    289,137.03/399,190.22 = 185,813.13/x
  3. Step 3: Cross multiply
    289,137.03x = 399,190.22 × 185,813.13
  4. Step 4: Simplify right side
    289,137.03x = 74,174,784,243.59
  5. Step 5: Solve for x
    x = 74,174,784,243.59/289,137.03
  6. Step 6: Final answer
    x = 256,538.51

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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.