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Finding the Fourth Proportional to 187,716.80, 281,656.20 and 108,898.40

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Solution

The fourth proportional to 187,716.80, 281,656.20 and 108,898.40 is: 163,394.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,716.80 : 281,656.20 = 108,898.40 : x
  2. Step 2: Convert to fraction form
    187,716.80/281,656.20 = 108,898.40/x
  3. Step 3: Cross multiply
    187,716.80x = 281,656.20 × 108,898.40
  4. Step 4: Simplify right side
    187,716.80x = 30,671,909,530.08
  5. Step 5: Solve for x
    x = 30,671,909,530.08/187,716.80
  6. Step 6: Final answer
    x = 163,394.59

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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.