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Finding the Fourth Proportional to 14,630.88, 20,190.48 and 7,916.37

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Solution

The fourth proportional to 14,630.88, 20,190.48 and 7,916.37 is: 10,924.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,630.88 : 20,190.48 = 7,916.37 : x
  2. Step 2: Convert to fraction form
    14,630.88/20,190.48 = 7,916.37/x
  3. Step 3: Cross multiply
    14,630.88x = 20,190.48 × 7,916.37
  4. Step 4: Simplify right side
    14,630.88x = 159,835,204.76
  5. Step 5: Solve for x
    x = 159,835,204.76/14,630.88
  6. Step 6: Final answer
    x = 10,924.51

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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.