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Finding the Fourth Proportional to 60,039.96, 90,061.76 and 20,596.50

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Solution

The fourth proportional to 60,039.96, 90,061.76 and 20,596.50 is: 30,895.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,039.96 : 90,061.76 = 20,596.50 : x
  2. Step 2: Convert to fraction form
    60,039.96/90,061.76 = 20,596.50/x
  3. Step 3: Cross multiply
    60,039.96x = 90,061.76 × 20,596.50
  4. Step 4: Simplify right side
    60,039.96x = 1,854,956,975.48
  5. Step 5: Solve for x
    x = 1,854,956,975.48/60,039.96
  6. Step 6: Final answer
    x = 30,895.38

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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.