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Finding the Fourth Proportional to 281,000.76, 421,070.22 and 190,928.76

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Solution

The fourth proportional to 281,000.76, 421,070.22 and 190,928.76 is: 286,100.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,000.76 : 421,070.22 = 190,928.76 : x
  2. Step 2: Convert to fraction form
    281,000.76/421,070.22 = 190,928.76/x
  3. Step 3: Cross multiply
    281,000.76x = 421,070.22 × 190,928.76
  4. Step 4: Simplify right side
    281,000.76x = 80,394,414,977.53
  5. Step 5: Solve for x
    x = 80,394,414,977.53/281,000.76
  6. Step 6: Final answer
    x = 286,100.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.