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Finding the Fourth Proportional to 13,200.74, 19,803.74 and 4,435.32

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Solution

The fourth proportional to 13,200.74, 19,803.74 and 4,435.32 is: 6,653.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.74 : 19,803.74 = 4,435.32 : x
  2. Step 2: Convert to fraction form
    13,200.74/19,803.74 = 4,435.32/x
  3. Step 3: Cross multiply
    13,200.74x = 19,803.74 × 4,435.32
  4. Step 4: Simplify right side
    13,200.74x = 87,835,924.10
  5. Step 5: Solve for x
    x = 87,835,924.10/13,200.74
  6. Step 6: Final answer
    x = 6,653.86

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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.