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Finding the Fourth Proportional to 383,171.67, 528,801.12 and 213,405.39

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Solution

The fourth proportional to 383,171.67, 528,801.12 and 213,405.39 is: 294,512.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,171.67 : 528,801.12 = 213,405.39 : x
  2. Step 2: Convert to fraction form
    383,171.67/528,801.12 = 213,405.39/x
  3. Step 3: Cross multiply
    383,171.67x = 528,801.12 × 213,405.39
  4. Step 4: Simplify right side
    383,171.67x = 112,849,009,246.04
  5. Step 5: Solve for x
    x = 112,849,009,246.04/383,171.67
  6. Step 6: Final answer
    x = 294,512.92

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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.