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Finding the Fourth Proportional to 7,622.71, 11,425.86 and 4,981.91

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Solution

The fourth proportional to 7,622.71, 11,425.86 and 4,981.91 is: 7,467.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,622.71 : 11,425.86 = 4,981.91 : x
  2. Step 2: Convert to fraction form
    7,622.71/11,425.86 = 4,981.91/x
  3. Step 3: Cross multiply
    7,622.71x = 11,425.86 × 4,981.91
  4. Step 4: Simplify right side
    7,622.71x = 56,922,549.06
  5. Step 5: Solve for x
    x = 56,922,549.06/7,622.71
  6. Step 6: Final answer
    x = 7,467.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.