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Finding the Fourth Proportional to 8,407.54, 11,603.76 and 4,872.80

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Solution

The fourth proportional to 8,407.54, 11,603.76 and 4,872.80 is: 6,725.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,407.54 : 11,603.76 = 4,872.80 : x
  2. Step 2: Convert to fraction form
    8,407.54/11,603.76 = 4,872.80/x
  3. Step 3: Cross multiply
    8,407.54x = 11,603.76 × 4,872.80
  4. Step 4: Simplify right side
    8,407.54x = 56,542,743.71
  5. Step 5: Solve for x
    x = 56,542,743.71/8,407.54
  6. Step 6: Final answer
    x = 6,725.25

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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.