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Finding the Fourth Proportional to 14,873.90, 20,528.71 and 8,904.33

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Solution

The fourth proportional to 14,873.90, 20,528.71 and 8,904.33 is: 12,289.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,873.90 : 20,528.71 = 8,904.33 : x
  2. Step 2: Convert to fraction form
    14,873.90/20,528.71 = 8,904.33/x
  3. Step 3: Cross multiply
    14,873.90x = 20,528.71 × 8,904.33
  4. Step 4: Simplify right side
    14,873.90x = 182,794,386.05
  5. Step 5: Solve for x
    x = 182,794,386.05/14,873.90
  6. Step 6: Final answer
    x = 12,289.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.