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Finding the Fourth Proportional to 9,774.77, 13,489.20 and 5,298.48

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Solution

The fourth proportional to 9,774.77, 13,489.20 and 5,298.48 is: 7,311.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,774.77 : 13,489.20 = 5,298.48 : x
  2. Step 2: Convert to fraction form
    9,774.77/13,489.20 = 5,298.48/x
  3. Step 3: Cross multiply
    9,774.77x = 13,489.20 × 5,298.48
  4. Step 4: Simplify right side
    9,774.77x = 71,472,256.42
  5. Step 5: Solve for x
    x = 71,472,256.42/9,774.77
  6. Step 6: Final answer
    x = 7,311.92

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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.