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Finding the Fourth Proportional to 60,858.36, 91,287.72 and 21,394.08

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Solution

The fourth proportional to 60,858.36, 91,287.72 and 21,394.08 is: 32,091.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,858.36 : 91,287.72 = 21,394.08 : x
  2. Step 2: Convert to fraction form
    60,858.36/91,287.72 = 21,394.08/x
  3. Step 3: Cross multiply
    60,858.36x = 91,287.72 × 21,394.08
  4. Step 4: Simplify right side
    60,858.36x = 1,953,016,784.70
  5. Step 5: Solve for x
    x = 1,953,016,784.70/60,858.36
  6. Step 6: Final answer
    x = 32,091.18

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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.