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Finding the Fourth Proportional to 56,970.44, 85,459.30 and 21,910.10

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Solution

The fourth proportional to 56,970.44, 85,459.30 and 21,910.10 is: 32,866.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,970.44 : 85,459.30 = 21,910.10 : x
  2. Step 2: Convert to fraction form
    56,970.44/85,459.30 = 21,910.10/x
  3. Step 3: Cross multiply
    56,970.44x = 85,459.30 × 21,910.10
  4. Step 4: Simplify right side
    56,970.44x = 1,872,421,450.10
  5. Step 5: Solve for x
    x = 1,872,421,450.10/56,970.44
  6. Step 6: Final answer
    x = 32,866.54

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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.