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Finding the Fourth Proportional to 60,464.30, 90,712.79 and 21,023.58

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Solution

The fourth proportional to 60,464.30, 90,712.79 and 21,023.58 is: 31,541.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,464.30 : 90,712.79 = 21,023.58 : x
  2. Step 2: Convert to fraction form
    60,464.30/90,712.79 = 21,023.58/x
  3. Step 3: Cross multiply
    60,464.30x = 90,712.79 × 21,023.58
  4. Step 4: Simplify right side
    60,464.30x = 1,907,107,597.59
  5. Step 5: Solve for x
    x = 1,907,107,597.59/60,464.30
  6. Step 6: Final answer
    x = 31,541.05

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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.