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Finding the Fourth Proportional to 7,323.90, 10,981.80 and 2,936.40

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Solution

The fourth proportional to 7,323.90, 10,981.80 and 2,936.40 is: 4,402.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,323.90 : 10,981.80 = 2,936.40 : x
  2. Step 2: Convert to fraction form
    7,323.90/10,981.80 = 2,936.40/x
  3. Step 3: Cross multiply
    7,323.90x = 10,981.80 × 2,936.40
  4. Step 4: Simplify right side
    7,323.90x = 32,246,957.52
  5. Step 5: Solve for x
    x = 32,246,957.52/7,323.90
  6. Step 6: Final answer
    x = 4,402.98

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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.