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Finding the Fourth Proportional to 9,574.11, 13,211.60 and 5,382.99

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Solution

The fourth proportional to 9,574.11, 13,211.60 and 5,382.99 is: 7,428.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,574.11 : 13,211.60 = 5,382.99 : x
  2. Step 2: Convert to fraction form
    9,574.11/13,211.60 = 5,382.99/x
  3. Step 3: Cross multiply
    9,574.11x = 13,211.60 × 5,382.99
  4. Step 4: Simplify right side
    9,574.11x = 71,117,883.77
  5. Step 5: Solve for x
    x = 71,117,883.77/9,574.11
  6. Step 6: Final answer
    x = 7,428.15

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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.