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Finding the Fourth Proportional to 289,186.40, 399,020.51 and 181,694.15

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Solution

The fourth proportional to 289,186.40, 399,020.51 and 181,694.15 is: 250,702.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,186.40 : 399,020.51 = 181,694.15 : x
  2. Step 2: Convert to fraction form
    289,186.40/399,020.51 = 181,694.15/x
  3. Step 3: Cross multiply
    289,186.40x = 399,020.51 × 181,694.15
  4. Step 4: Simplify right side
    289,186.40x = 72,499,692,851.25
  5. Step 5: Solve for x
    x = 72,499,692,851.25/289,186.40
  6. Step 6: Final answer
    x = 250,702.29

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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.