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Finding the Fourth Proportional to 207,995.58, 287,033.94 and 117,370.80

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Solution

The fourth proportional to 207,995.58, 287,033.94 and 117,370.80 is: 161,971.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,995.58 : 287,033.94 = 117,370.80 : x
  2. Step 2: Convert to fraction form
    207,995.58/287,033.94 = 117,370.80/x
  3. Step 3: Cross multiply
    207,995.58x = 287,033.94 × 117,370.80
  4. Step 4: Simplify right side
    207,995.58x = 33,689,403,164.95
  5. Step 5: Solve for x
    x = 33,689,403,164.95/207,995.58
  6. Step 6: Final answer
    x = 161,971.73

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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.