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Finding the Fourth Proportional to 212,290.01, 318,383.94 and 62,489.60

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Solution

The fourth proportional to 212,290.01, 318,383.94 and 62,489.60 is: 93,719.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,290.01 : 318,383.94 = 62,489.60 : x
  2. Step 2: Convert to fraction form
    212,290.01/318,383.94 = 62,489.60/x
  3. Step 3: Cross multiply
    212,290.01x = 318,383.94 × 62,489.60
  4. Step 4: Simplify right side
    212,290.01x = 19,895,685,057.02
  5. Step 5: Solve for x
    x = 19,895,685,057.02/212,290.01
  6. Step 6: Final answer
    x = 93,719.37

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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.