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Finding the Fourth Proportional to 281,906.76, 388,655.00 and 223,955.79

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Solution

The fourth proportional to 281,906.76, 388,655.00 and 223,955.79 is: 308,760.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,906.76 : 388,655.00 = 223,955.79 : x
  2. Step 2: Convert to fraction form
    281,906.76/388,655.00 = 223,955.79/x
  3. Step 3: Cross multiply
    281,906.76x = 388,655.00 × 223,955.79
  4. Step 4: Simplify right side
    281,906.76x = 87,041,536,442.67
  5. Step 5: Solve for x
    x = 87,041,536,442.67/281,906.76
  6. Step 6: Final answer
    x = 308,760.02

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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.