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Finding the Fourth Proportional to 188,943.40, 283,406.90 and 70,615.76

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Solution

The fourth proportional to 188,943.40, 283,406.90 and 70,615.76 is: 105,920.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,943.40 : 283,406.90 = 70,615.76 : x
  2. Step 2: Convert to fraction form
    188,943.40/283,406.90 = 70,615.76/x
  3. Step 3: Cross multiply
    188,943.40x = 283,406.90 × 70,615.76
  4. Step 4: Simplify right side
    188,943.40x = 20,012,993,632.74
  5. Step 5: Solve for x
    x = 20,012,993,632.74/188,943.40
  6. Step 6: Final answer
    x = 105,920.58

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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.