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Finding the Fourth Proportional to 191,722.20, 287,583.30 and 178,600.20

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Solution

The fourth proportional to 191,722.20, 287,583.30 and 178,600.20 is: 267,900.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,722.20 : 287,583.30 = 178,600.20 : x
  2. Step 2: Convert to fraction form
    191,722.20/287,583.30 = 178,600.20/x
  3. Step 3: Cross multiply
    191,722.20x = 287,583.30 × 178,600.20
  4. Step 4: Simplify right side
    191,722.20x = 51,362,434,896.66
  5. Step 5: Solve for x
    x = 51,362,434,896.66/191,722.20
  6. Step 6: Final answer
    x = 267,900.30

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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.