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Finding the Fourth Proportional to 287,682.08, 431,668.87 and 191,684.90

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Solution

The fourth proportional to 287,682.08, 431,668.87 and 191,684.90 is: 287,624.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,682.08 : 431,668.87 = 191,684.90 : x
  2. Step 2: Convert to fraction form
    287,682.08/431,668.87 = 191,684.90/x
  3. Step 3: Cross multiply
    287,682.08x = 431,668.87 × 191,684.90
  4. Step 4: Simplify right side
    287,682.08x = 82,744,404,779.02
  5. Step 5: Solve for x
    x = 82,744,404,779.02/287,682.08
  6. Step 6: Final answer
    x = 287,624.47

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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.