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Finding the Fourth Proportional to 452,130.23, 678,321.33 and 368,678.42

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Solution

The fourth proportional to 452,130.23, 678,321.33 and 368,678.42 is: 553,120.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,130.23 : 678,321.33 = 368,678.42 : x
  2. Step 2: Convert to fraction form
    452,130.23/678,321.33 = 368,678.42/x
  3. Step 3: Cross multiply
    452,130.23x = 678,321.33 × 368,678.42
  4. Step 4: Simplify right side
    452,130.23x = 250,082,432,805.09
  5. Step 5: Solve for x
    x = 250,082,432,805.09/452,130.23
  6. Step 6: Final answer
    x = 553,120.36

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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.