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Finding the Fourth Proportional to 222,391, 333,621.06 and 74,681.56

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Solution

The fourth proportional to 222,391, 333,621.06 and 74,681.56 is: 112,033.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,391 : 333,621.06 = 74,681.56 : x
  2. Step 2: Convert to fraction form
    222,391/333,621.06 = 74,681.56/x
  3. Step 3: Cross multiply
    222,391x = 333,621.06 × 74,681.56
  4. Step 4: Simplify right side
    222,391x = 24,915,341,209.65
  5. Step 5: Solve for x
    x = 24,915,341,209.65/222,391
  6. Step 6: Final answer
    x = 112,033.95

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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.