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Finding the Fourth Proportional to 619,449.12, 929,435.04 and 338,638.32

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Solution

The fourth proportional to 619,449.12, 929,435.04 and 338,638.32 is: 508,100.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,449.12 : 929,435.04 = 338,638.32 : x
  2. Step 2: Convert to fraction form
    619,449.12/929,435.04 = 338,638.32/x
  3. Step 3: Cross multiply
    619,449.12x = 929,435.04 × 338,638.32
  4. Step 4: Simplify right side
    619,449.12x = 314,742,320,494.73
  5. Step 5: Solve for x
    x = 314,742,320,494.73/619,449.12
  6. Step 6: Final answer
    x = 508,100.36

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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.