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Finding the Fourth Proportional to 51,395.50, 70,925.79 and 29,039.50

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Solution

The fourth proportional to 51,395.50, 70,925.79 and 29,039.50 is: 40,074.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,395.50 : 70,925.79 = 29,039.50 : x
  2. Step 2: Convert to fraction form
    51,395.50/70,925.79 = 29,039.50/x
  3. Step 3: Cross multiply
    51,395.50x = 70,925.79 × 29,039.50
  4. Step 4: Simplify right side
    51,395.50x = 2,059,649,478.71
  5. Step 5: Solve for x
    x = 2,059,649,478.71/51,395.50
  6. Step 6: Final answer
    x = 40,074.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.