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Finding the Fourth Proportional to 8,725.86, 12,039.64 and 4,948.16

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Solution

The fourth proportional to 8,725.86, 12,039.64 and 4,948.16 is: 6,827.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,725.86 : 12,039.64 = 4,948.16 : x
  2. Step 2: Convert to fraction form
    8,725.86/12,039.64 = 4,948.16/x
  3. Step 3: Cross multiply
    8,725.86x = 12,039.64 × 4,948.16
  4. Step 4: Simplify right side
    8,725.86x = 59,573,992.49
  5. Step 5: Solve for x
    x = 59,573,992.49/8,725.86
  6. Step 6: Final answer
    x = 6,827.29

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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.