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Finding the Fourth Proportional to 7,338.80, 10,980.72 and 4,366.40

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Solution

The fourth proportional to 7,338.80, 10,980.72 and 4,366.40 is: 6,533.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,338.80 : 10,980.72 = 4,366.40 : x
  2. Step 2: Convert to fraction form
    7,338.80/10,980.72 = 4,366.40/x
  3. Step 3: Cross multiply
    7,338.80x = 10,980.72 × 4,366.40
  4. Step 4: Simplify right side
    7,338.80x = 47,946,215.81
  5. Step 5: Solve for x
    x = 47,946,215.81/7,338.80
  6. Step 6: Final answer
    x = 6,533.25

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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.