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Finding the Fourth Proportional to 57,666.88, 86,534.88 and 20,733.76

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Solution

The fourth proportional to 57,666.88, 86,534.88 and 20,733.76 is: 31,113.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,666.88 : 86,534.88 = 20,733.76 : x
  2. Step 2: Convert to fraction form
    57,666.88/86,534.88 = 20,733.76/x
  3. Step 3: Cross multiply
    57,666.88x = 86,534.88 × 20,733.76
  4. Step 4: Simplify right side
    57,666.88x = 1,794,193,433.55
  5. Step 5: Solve for x
    x = 1,794,193,433.55/57,666.88
  6. Step 6: Final answer
    x = 31,113.07

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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.