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Finding the Fourth Proportional to 187,651.58, 258,959.28 and 102,768.63

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Solution

The fourth proportional to 187,651.58, 258,959.28 and 102,768.63 is: 141,820.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,651.58 : 258,959.28 = 102,768.63 : x
  2. Step 2: Convert to fraction form
    187,651.58/258,959.28 = 102,768.63/x
  3. Step 3: Cross multiply
    187,651.58x = 258,959.28 × 102,768.63
  4. Step 4: Simplify right side
    187,651.58x = 26,612,890,431.39
  5. Step 5: Solve for x
    x = 26,612,890,431.39/187,651.58
  6. Step 6: Final answer
    x = 141,820.77

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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.