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Finding the Fourth Proportional to 447,919.81, 618,124.11 and 243,970.10

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Solution

The fourth proportional to 447,919.81, 618,124.11 and 243,970.10 is: 336,675.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,919.81 : 618,124.11 = 243,970.10 : x
  2. Step 2: Convert to fraction form
    447,919.81/618,124.11 = 243,970.10/x
  3. Step 3: Cross multiply
    447,919.81x = 618,124.11 × 243,970.10
  4. Step 4: Simplify right side
    447,919.81x = 150,803,802,352.37
  5. Step 5: Solve for x
    x = 150,803,802,352.37/447,919.81
  6. Step 6: Final answer
    x = 336,675.89

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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.