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Finding the Fourth Proportional to 188,555.88, 260,262.29 and 112,128.84

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Solution

The fourth proportional to 188,555.88, 260,262.29 and 112,128.84 is: 154,770.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,555.88 : 260,262.29 = 112,128.84 : x
  2. Step 2: Convert to fraction form
    188,555.88/260,262.29 = 112,128.84/x
  3. Step 3: Cross multiply
    188,555.88x = 260,262.29 × 112,128.84
  4. Step 4: Simplify right side
    188,555.88x = 29,182,908,112.80
  5. Step 5: Solve for x
    x = 29,182,908,112.80/188,555.88
  6. Step 6: Final answer
    x = 154,770.61

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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.