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Finding the Fourth Proportional to 9,928.76, 13,702.05 and 5,453.01

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Solution

The fourth proportional to 9,928.76, 13,702.05 and 5,453.01 is: 7,525.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,928.76 : 13,702.05 = 5,453.01 : x
  2. Step 2: Convert to fraction form
    9,928.76/13,702.05 = 5,453.01/x
  3. Step 3: Cross multiply
    9,928.76x = 13,702.05 × 5,453.01
  4. Step 4: Simplify right side
    9,928.76x = 74,717,415.67
  5. Step 5: Solve for x
    x = 74,717,415.67/9,928.76
  6. Step 6: Final answer
    x = 7,525.36

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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.