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Finding the Fourth Proportional to 343,499.58, 474,037.01 and 190,532.78

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Solution

The fourth proportional to 343,499.58, 474,037.01 and 190,532.78 is: 262,939.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,499.58 : 474,037.01 = 190,532.78 : x
  2. Step 2: Convert to fraction form
    343,499.58/474,037.01 = 190,532.78/x
  3. Step 3: Cross multiply
    343,499.58x = 474,037.01 × 190,532.78
  4. Step 4: Simplify right side
    343,499.58x = 90,319,589,338.19
  5. Step 5: Solve for x
    x = 90,319,589,338.19/343,499.58
  6. Step 6: Final answer
    x = 262,939.45

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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.