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Finding the Fourth Proportional to 185,633.84, 256,168.20 and 100,749.20

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Solution

The fourth proportional to 185,633.84, 256,168.20 and 100,749.20 is: 139,030.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,633.84 : 256,168.20 = 100,749.20 : x
  2. Step 2: Convert to fraction form
    185,633.84/256,168.20 = 100,749.20/x
  3. Step 3: Cross multiply
    185,633.84x = 256,168.20 × 100,749.20
  4. Step 4: Simplify right side
    185,633.84x = 25,808,741,215.44
  5. Step 5: Solve for x
    x = 25,808,741,215.44/185,633.84
  6. Step 6: Final answer
    x = 139,030.37

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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.