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Finding the Fourth Proportional to 8,590.28, 11,888.24 and 8,444.48

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Solution

The fourth proportional to 8,590.28, 11,888.24 and 8,444.48 is: 11,686.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,590.28 : 11,888.24 = 8,444.48 : x
  2. Step 2: Convert to fraction form
    8,590.28/11,888.24 = 8,444.48/x
  3. Step 3: Cross multiply
    8,590.28x = 11,888.24 × 8,444.48
  4. Step 4: Simplify right side
    8,590.28x = 100,390,004.92
  5. Step 5: Solve for x
    x = 100,390,004.92/8,590.28
  6. Step 6: Final answer
    x = 11,686.46

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Half scale
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Similar ratio
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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.