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Finding the Fourth Proportional to 85,858.74, 118,491.12 and 47,630.52

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Solution

The fourth proportional to 85,858.74, 118,491.12 and 47,630.52 is: 65,733.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,858.74 : 118,491.12 = 47,630.52 : x
  2. Step 2: Convert to fraction form
    85,858.74/118,491.12 = 47,630.52/x
  3. Step 3: Cross multiply
    85,858.74x = 118,491.12 × 47,630.52
  4. Step 4: Simplify right side
    85,858.74x = 5,643,793,660.98
  5. Step 5: Solve for x
    x = 5,643,793,660.98/85,858.74
  6. Step 6: Final answer
    x = 65,733.48

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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.