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Finding the Fourth Proportional to 281,198.34, 388,053.72 and 153,873.93

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Solution

The fourth proportional to 281,198.34, 388,053.72 and 153,873.93 is: 212,346.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,198.34 : 388,053.72 = 153,873.93 : x
  2. Step 2: Convert to fraction form
    281,198.34/388,053.72 = 153,873.93/x
  3. Step 3: Cross multiply
    281,198.34x = 388,053.72 × 153,873.93
  4. Step 4: Simplify right side
    281,198.34x = 59,711,350,947.52
  5. Step 5: Solve for x
    x = 59,711,350,947.52/281,198.34
  6. Step 6: Final answer
    x = 212,346.03

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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.