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Finding the Fourth Proportional to 281,296.77, 388,174.59 and 153,947.76

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Solution

The fourth proportional to 281,296.77, 388,174.59 and 153,947.76 is: 212,439.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,296.77 : 388,174.59 = 153,947.76 : x
  2. Step 2: Convert to fraction form
    281,296.77/388,174.59 = 153,947.76/x
  3. Step 3: Cross multiply
    281,296.77x = 388,174.59 × 153,947.76
  4. Step 4: Simplify right side
    281,296.77x = 59,758,608,619.42
  5. Step 5: Solve for x
    x = 59,758,608,619.42/281,296.77
  6. Step 6: Final answer
    x = 212,439.73

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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.