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Finding the Fourth Proportional to 14,627.66, 20,186.22 and 7,913.32

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Solution

The fourth proportional to 14,627.66, 20,186.22 and 7,913.32 is: 10,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,627.66 : 20,186.22 = 7,913.32 : x
  2. Step 2: Convert to fraction form
    14,627.66/20,186.22 = 7,913.32/x
  3. Step 3: Cross multiply
    14,627.66x = 20,186.22 × 7,913.32
  4. Step 4: Simplify right side
    14,627.66x = 159,739,917.52
  5. Step 5: Solve for x
    x = 159,739,917.52/14,627.66
  6. Step 6: Final answer
    x = 10,920.40

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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.