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Finding the Fourth Proportional to 188,696.72, 283,018.68 and 70,352.72

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Solution

The fourth proportional to 188,696.72, 283,018.68 and 70,352.72 is: 105,519.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,696.72 : 283,018.68 = 70,352.72 : x
  2. Step 2: Convert to fraction form
    188,696.72/283,018.68 = 70,352.72/x
  3. Step 3: Cross multiply
    188,696.72x = 283,018.68 × 70,352.72
  4. Step 4: Simplify right side
    188,696.72x = 19,911,133,948.81
  5. Step 5: Solve for x
    x = 19,911,133,948.81/188,696.72
  6. Step 6: Final answer
    x = 105,519.24

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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.