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Finding the Fourth Proportional to 281,324.42, 388,228.76 and 154,011.86

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Solution

The fourth proportional to 281,324.42, 388,228.76 and 154,011.86 is: 212,536.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,324.42 : 388,228.76 = 154,011.86 : x
  2. Step 2: Convert to fraction form
    281,324.42/388,228.76 = 154,011.86/x
  3. Step 3: Cross multiply
    281,324.42x = 388,228.76 × 154,011.86
  4. Step 4: Simplify right side
    281,324.42x = 59,791,833,433.09
  5. Step 5: Solve for x
    x = 59,791,833,433.09/281,324.42
  6. Step 6: Final answer
    x = 212,536.95

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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.