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Finding the Fourth Proportional to 40,580.74, 60,871.74 and 14,285.80

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Solution

The fourth proportional to 40,580.74, 60,871.74 and 14,285.80 is: 21,428.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,580.74 : 60,871.74 = 14,285.80 : x
  2. Step 2: Convert to fraction form
    40,580.74/60,871.74 = 14,285.80/x
  3. Step 3: Cross multiply
    40,580.74x = 60,871.74 × 14,285.80
  4. Step 4: Simplify right side
    40,580.74x = 869,601,503.29
  5. Step 5: Solve for x
    x = 869,601,503.29/40,580.74
  6. Step 6: Final answer
    x = 21,428.92

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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.