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Finding the Fourth Proportional to 13,572.60, 18,730.12 and 7,604.11

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Solution

The fourth proportional to 13,572.60, 18,730.12 and 7,604.11 is: 10,493.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,572.60 : 18,730.12 = 7,604.11 : x
  2. Step 2: Convert to fraction form
    13,572.60/18,730.12 = 7,604.11/x
  3. Step 3: Cross multiply
    13,572.60x = 18,730.12 × 7,604.11
  4. Step 4: Simplify right side
    13,572.60x = 142,425,911.45
  5. Step 5: Solve for x
    x = 142,425,911.45/13,572.60
  6. Step 6: Final answer
    x = 10,493.64

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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.