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Finding the Fourth Proportional to 361,103.81, 498,317.12 and 199,955.40

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Solution

The fourth proportional to 361,103.81, 498,317.12 and 199,955.40 is: 275,935.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,103.81 : 498,317.12 = 199,955.40 : x
  2. Step 2: Convert to fraction form
    361,103.81/498,317.12 = 199,955.40/x
  3. Step 3: Cross multiply
    361,103.81x = 498,317.12 × 199,955.40
  4. Step 4: Simplify right side
    361,103.81x = 99,641,199,056.45
  5. Step 5: Solve for x
    x = 99,641,199,056.45/361,103.81
  6. Step 6: Final answer
    x = 275,935.05

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1.5x scale

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.