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Finding the Fourth Proportional to 8,871.86, 12,243.16 and 4,893.22

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Solution

The fourth proportional to 8,871.86, 12,243.16 and 4,893.22 is: 6,752.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.86 : 12,243.16 = 4,893.22 : x
  2. Step 2: Convert to fraction form
    8,871.86/12,243.16 = 4,893.22/x
  3. Step 3: Cross multiply
    8,871.86x = 12,243.16 × 4,893.22
  4. Step 4: Simplify right side
    8,871.86x = 59,908,475.38
  5. Step 5: Solve for x
    x = 59,908,475.38/8,871.86
  6. Step 6: Final answer
    x = 6,752.64

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Find fourth proportional to 4,435.93, 6,121.58 and 2,446.61
Half scale
Find fourth proportional to 17,743.72, 24,486.32 and 9,786.44
Double scale
Find fourth proportional to 8,872.86, 12,244.54 and 4,894.22
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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.