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Finding the Fourth Proportional to 479,407.79, 718,690.44 and 195,337.21

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Solution

The fourth proportional to 479,407.79, 718,690.44 and 195,337.21 is: 292,834.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,407.79 : 718,690.44 = 195,337.21 : x
  2. Step 2: Convert to fraction form
    479,407.79/718,690.44 = 195,337.21/x
  3. Step 3: Cross multiply
    479,407.79x = 718,690.44 × 195,337.21
  4. Step 4: Simplify right side
    479,407.79x = 140,386,985,403.27
  5. Step 5: Solve for x
    x = 140,386,985,403.27/479,407.79
  6. Step 6: Final answer
    x = 292,834.18

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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.