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Finding the Fourth Proportional to 68,870.16, 103,283.32 and 22,112.08

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Solution

The fourth proportional to 68,870.16, 103,283.32 and 22,112.08 is: 33,161.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,870.16 : 103,283.32 = 22,112.08 : x
  2. Step 2: Convert to fraction form
    68,870.16/103,283.32 = 22,112.08/x
  3. Step 3: Cross multiply
    68,870.16x = 103,283.32 × 22,112.08
  4. Step 4: Simplify right side
    68,870.16x = 2,283,809,034.51
  5. Step 5: Solve for x
    x = 2,283,809,034.51/68,870.16
  6. Step 6: Final answer
    x = 33,161.08

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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.