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Finding the Fourth Proportional to 281,698.77, 388,747.36 and 154,371.63

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Solution

The fourth proportional to 281,698.77, 388,747.36 and 154,371.63 is: 213,034.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,698.77 : 388,747.36 = 154,371.63 : x
  2. Step 2: Convert to fraction form
    281,698.77/388,747.36 = 154,371.63/x
  3. Step 3: Cross multiply
    281,698.77x = 388,747.36 × 154,371.63
  4. Step 4: Simplify right side
    281,698.77x = 60,011,563,621.40
  5. Step 5: Solve for x
    x = 60,011,563,621.40/281,698.77
  6. Step 6: Final answer
    x = 213,034.52

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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.