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Finding the Fourth Proportional to 9,899.28, 13,658.60 and 5,483.28

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Solution

The fourth proportional to 9,899.28, 13,658.60 and 5,483.28 is: 7,565.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,899.28 : 13,658.60 = 5,483.28 : x
  2. Step 2: Convert to fraction form
    9,899.28/13,658.60 = 5,483.28/x
  3. Step 3: Cross multiply
    9,899.28x = 13,658.60 × 5,483.28
  4. Step 4: Simplify right side
    9,899.28x = 74,893,928.21
  5. Step 5: Solve for x
    x = 74,893,928.21/9,899.28
  6. Step 6: Final answer
    x = 7,565.59

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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.