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Finding the Fourth Proportional to 448,805.28, 619,289.85 and 257,818.62

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Solution

The fourth proportional to 448,805.28, 619,289.85 and 257,818.62 is: 355,754.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,805.28 : 619,289.85 = 257,818.62 : x
  2. Step 2: Convert to fraction form
    448,805.28/619,289.85 = 257,818.62/x
  3. Step 3: Cross multiply
    448,805.28x = 619,289.85 × 257,818.62
  4. Step 4: Simplify right side
    448,805.28x = 159,664,454,507.01
  5. Step 5: Solve for x
    x = 159,664,454,507.01/448,805.28
  6. Step 6: Final answer
    x = 355,754.40

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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.