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Finding the Fourth Proportional to 61,272.32, 91,891.68 and 16,888.64

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Solution

The fourth proportional to 61,272.32, 91,891.68 and 16,888.64 is: 25,328.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,272.32 : 91,891.68 = 16,888.64 : x
  2. Step 2: Convert to fraction form
    61,272.32/91,891.68 = 16,888.64/x
  3. Step 3: Cross multiply
    61,272.32x = 91,891.68 × 16,888.64
  4. Step 4: Simplify right side
    61,272.32x = 1,551,925,502.52
  5. Step 5: Solve for x
    x = 1,551,925,502.52/61,272.32
  6. Step 6: Final answer
    x = 25,328.33

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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.