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Finding the Fourth Proportional to 188,176.40, 259,673.76 and 111,698.72

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Solution

The fourth proportional to 188,176.40, 259,673.76 and 111,698.72 is: 154,138.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,176.40 : 259,673.76 = 111,698.72 : x
  2. Step 2: Convert to fraction form
    188,176.40/259,673.76 = 111,698.72/x
  3. Step 3: Cross multiply
    188,176.40x = 259,673.76 × 111,698.72
  4. Step 4: Simplify right side
    188,176.40x = 29,005,226,609.59
  5. Step 5: Solve for x
    x = 29,005,226,609.59/188,176.40
  6. Step 6: Final answer
    x = 154,138.49

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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.