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Finding the Fourth Proportional to 56,906.76, 85,360.14 and 21,827.28

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Solution

The fourth proportional to 56,906.76, 85,360.14 and 21,827.28 is: 32,740.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,906.76 : 85,360.14 = 21,827.28 : x
  2. Step 2: Convert to fraction form
    56,906.76/85,360.14 = 21,827.28/x
  3. Step 3: Cross multiply
    56,906.76x = 85,360.14 × 21,827.28
  4. Step 4: Simplify right side
    56,906.76x = 1,863,179,676.62
  5. Step 5: Solve for x
    x = 1,863,179,676.62/56,906.76
  6. Step 6: Final answer
    x = 32,740.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.