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Finding the Fourth Proportional to 14,627.60, 20,186.01 and 7,913.22

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Solution

The fourth proportional to 14,627.60, 20,186.01 and 7,913.22 is: 10,920.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,627.60 : 20,186.01 = 7,913.22 : x
  2. Step 2: Convert to fraction form
    14,627.60/20,186.01 = 7,913.22/x
  3. Step 3: Cross multiply
    14,627.60x = 20,186.01 × 7,913.22
  4. Step 4: Simplify right side
    14,627.60x = 159,736,338.05
  5. Step 5: Solve for x
    x = 159,736,338.05/14,627.60
  6. Step 6: Final answer
    x = 10,920.21

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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.