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Finding the Fourth Proportional to 422,506.68, 583,059.22 and 243,658.68

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Solution

The fourth proportional to 422,506.68, 583,059.22 and 243,658.68 is: 336,248.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,506.68 : 583,059.22 = 243,658.68 : x
  2. Step 2: Convert to fraction form
    422,506.68/583,059.22 = 243,658.68/x
  3. Step 3: Cross multiply
    422,506.68x = 583,059.22 × 243,658.68
  4. Step 4: Simplify right side
    422,506.68x = 142,067,439,907.03
  5. Step 5: Solve for x
    x = 142,067,439,907.03/422,506.68
  6. Step 6: Final answer
    x = 336,248.98

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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.