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Finding the Fourth Proportional to 163,697.76, 225,709.68 and 112,039.77

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Solution

The fourth proportional to 163,697.76, 225,709.68 and 112,039.77 is: 154,482.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,697.76 : 225,709.68 = 112,039.77 : x
  2. Step 2: Convert to fraction form
    163,697.76/225,709.68 = 112,039.77/x
  3. Step 3: Cross multiply
    163,697.76x = 225,709.68 × 112,039.77
  4. Step 4: Simplify right side
    163,697.76x = 25,288,460,160.54
  5. Step 5: Solve for x
    x = 25,288,460,160.54/163,697.76
  6. Step 6: Final answer
    x = 154,482.63

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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.