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Finding the Fourth Proportional to 188,768.65, 283,143.75 and 70,430.77

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Solution

The fourth proportional to 188,768.65, 283,143.75 and 70,430.77 is: 105,642.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,768.65 : 283,143.75 = 70,430.77 : x
  2. Step 2: Convert to fraction form
    188,768.65/283,143.75 = 70,430.77/x
  3. Step 3: Cross multiply
    188,768.65x = 283,143.75 × 70,430.77
  4. Step 4: Simplify right side
    188,768.65x = 19,942,031,226.49
  5. Step 5: Solve for x
    x = 19,942,031,226.49/188,768.65
  6. Step 6: Final answer
    x = 105,642.71

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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.