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Finding the Fourth Proportional to 187,689.88, 259,015.79 and 102,806.94

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Solution

The fourth proportional to 187,689.88, 259,015.79 and 102,806.94 is: 141,875.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,689.88 : 259,015.79 = 102,806.94 : x
  2. Step 2: Convert to fraction form
    187,689.88/259,015.79 = 102,806.94/x
  3. Step 3: Cross multiply
    187,689.88x = 259,015.79 × 102,806.94
  4. Step 4: Simplify right side
    187,689.88x = 26,628,620,781.58
  5. Step 5: Solve for x
    x = 26,628,620,781.58/187,689.88
  6. Step 6: Final answer
    x = 141,875.63

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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.