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Finding the Fourth Proportional to 616,291.20, 923,443.20 and 349,257.60

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Solution

The fourth proportional to 616,291.20, 923,443.20 and 349,257.60 is: 523,323.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,291.20 : 923,443.20 = 349,257.60 : x
  2. Step 2: Convert to fraction form
    616,291.20/923,443.20 = 349,257.60/x
  3. Step 3: Cross multiply
    616,291.20x = 923,443.20 × 349,257.60
  4. Step 4: Simplify right side
    616,291.20x = 322,519,555,768.32
  5. Step 5: Solve for x
    x = 322,519,555,768.32/616,291.20
  6. Step 6: Final answer
    x = 523,323.32

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1.5x scale

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.