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Finding the Fourth Proportional to 2,940.16, 4,410.30 and 992.32

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Solution

The fourth proportional to 2,940.16, 4,410.30 and 992.32 is: 1,488.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.16 : 4,410.30 = 992.32 : x
  2. Step 2: Convert to fraction form
    2,940.16/4,410.30 = 992.32/x
  3. Step 3: Cross multiply
    2,940.16x = 4,410.30 × 992.32
  4. Step 4: Simplify right side
    2,940.16x = 4,376,428.90
  5. Step 5: Solve for x
    x = 4,376,428.90/2,940.16
  6. Step 6: Final answer
    x = 1,488.50

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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.