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Finding the Fourth Proportional to 25,558.79, 38,337.26 and 12,407.63

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Solution

The fourth proportional to 25,558.79, 38,337.26 and 12,407.63 is: 18,610.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,558.79 : 38,337.26 = 12,407.63 : x
  2. Step 2: Convert to fraction form
    25,558.79/38,337.26 = 12,407.63/x
  3. Step 3: Cross multiply
    25,558.79x = 38,337.26 × 12,407.63
  4. Step 4: Simplify right side
    25,558.79x = 475,674,283.57
  5. Step 5: Solve for x
    x = 475,674,283.57/25,558.79
  6. Step 6: Final answer
    x = 18,610.99

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