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Finding the Fourth Proportional to 7,940.80, 10,957.53 and 4,403.94

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Solution

The fourth proportional to 7,940.80, 10,957.53 and 4,403.94 is: 6,077.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.80 : 10,957.53 = 4,403.94 : x
  2. Step 2: Convert to fraction form
    7,940.80/10,957.53 = 4,403.94/x
  3. Step 3: Cross multiply
    7,940.80x = 10,957.53 × 4,403.94
  4. Step 4: Simplify right side
    7,940.80x = 48,256,304.67
  5. Step 5: Solve for x
    x = 48,256,304.67/7,940.80
  6. Step 6: Final answer
    x = 6,077.01

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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.