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Finding the Fourth Proportional to 93,873, 129,544.74 and 51,432.51

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Solution

The fourth proportional to 93,873, 129,544.74 and 51,432.51 is: 70,976.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,873 : 129,544.74 = 51,432.51 : x
  2. Step 2: Convert to fraction form
    93,873/129,544.74 = 51,432.51/x
  3. Step 3: Cross multiply
    93,873x = 129,544.74 × 51,432.51
  4. Step 4: Simplify right side
    93,873x = 6,662,811,135.50
  5. Step 5: Solve for x
    x = 6,662,811,135.50/93,873
  6. Step 6: Final answer
    x = 70,976.86

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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.