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Finding the Fourth Proportional to 318,954.81, 440,140.58 and 190,039.37

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Solution

The fourth proportional to 318,954.81, 440,140.58 and 190,039.37 is: 262,244.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,954.81 : 440,140.58 = 190,039.37 : x
  2. Step 2: Convert to fraction form
    318,954.81/440,140.58 = 190,039.37/x
  3. Step 3: Cross multiply
    318,954.81x = 440,140.58 × 190,039.37
  4. Step 4: Simplify right side
    318,954.81x = 83,644,037,165.35
  5. Step 5: Solve for x
    x = 83,644,037,165.35/318,954.81
  6. Step 6: Final answer
    x = 262,244.16

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1.5x scale

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.