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Finding the Fourth Proportional to 476,358.24, 714,672.72 and 388,443.36

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Solution

The fourth proportional to 476,358.24, 714,672.72 and 388,443.36 is: 582,775.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,358.24 : 714,672.72 = 388,443.36 : x
  2. Step 2: Convert to fraction form
    476,358.24/714,672.72 = 388,443.36/x
  3. Step 3: Cross multiply
    476,358.24x = 714,672.72 × 388,443.36
  4. Step 4: Simplify right side
    476,358.24x = 277,609,872,657.14
  5. Step 5: Solve for x
    x = 277,609,872,657.14/476,358.24
  6. Step 6: Final answer
    x = 582,775.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.