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Finding the Fourth Proportional to 405,956.60, 608,934.90 and 195,615.80

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Solution

The fourth proportional to 405,956.60, 608,934.90 and 195,615.80 is: 293,423.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,956.60 : 608,934.90 = 195,615.80 : x
  2. Step 2: Convert to fraction form
    405,956.60/608,934.90 = 195,615.80/x
  3. Step 3: Cross multiply
    405,956.60x = 608,934.90 × 195,615.80
  4. Step 4: Simplify right side
    405,956.60x = 119,117,287,611.42
  5. Step 5: Solve for x
    x = 119,117,287,611.42/405,956.60
  6. Step 6: Final answer
    x = 293,423.70

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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.