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Finding the Fourth Proportional to 57,445.61, 86,155.11 and 21,910.91

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Solution

The fourth proportional to 57,445.61, 86,155.11 and 21,910.91 is: 32,861.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,445.61 : 86,155.11 = 21,910.91 : x
  2. Step 2: Convert to fraction form
    57,445.61/86,155.11 = 21,910.91/x
  3. Step 3: Cross multiply
    57,445.61x = 86,155.11 × 21,910.91
  4. Step 4: Simplify right side
    57,445.61x = 1,887,736,430.47
  5. Step 5: Solve for x
    x = 1,887,736,430.47/57,445.61
  6. Step 6: Final answer
    x = 32,861.29

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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.