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Finding the Fourth Proportional to 289,899, 400,104.36 and 176,787.36

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Solution

The fourth proportional to 289,899, 400,104.36 and 176,787.36 is: 243,993.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,899 : 400,104.36 = 176,787.36 : x
  2. Step 2: Convert to fraction form
    289,899/400,104.36 = 176,787.36/x
  3. Step 3: Cross multiply
    289,899x = 400,104.36 × 176,787.36
  4. Step 4: Simplify right side
    289,899x = 70,733,393,528.89
  5. Step 5: Solve for x
    x = 70,733,393,528.89/289,899
  6. Step 6: Final answer
    x = 243,993.23

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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.