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Finding the Fourth Proportional to 26,125.60, 39,123.60 and 20,941.60

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Solution

The fourth proportional to 26,125.60, 39,123.60 and 20,941.60 is: 31,360.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,125.60 : 39,123.60 = 20,941.60 : x
  2. Step 2: Convert to fraction form
    26,125.60/39,123.60 = 20,941.60/x
  3. Step 3: Cross multiply
    26,125.60x = 39,123.60 × 20,941.60
  4. Step 4: Simplify right side
    26,125.60x = 819,310,781.76
  5. Step 5: Solve for x
    x = 819,310,781.76/26,125.60
  6. Step 6: Final answer
    x = 31,360.46

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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.