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Finding the Fourth Proportional to 405,715.96, 608,330.92 and 192,536.92

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Solution

The fourth proportional to 405,715.96, 608,330.92 and 192,536.92 is: 288,690.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,715.96 : 608,330.92 = 192,536.92 : x
  2. Step 2: Convert to fraction form
    405,715.96/608,330.92 = 192,536.92/x
  3. Step 3: Cross multiply
    405,715.96x = 608,330.92 × 192,536.92
  4. Step 4: Simplify right side
    405,715.96x = 117,126,161,677.57
  5. Step 5: Solve for x
    x = 117,126,161,677.57/405,715.96
  6. Step 6: Final answer
    x = 288,690.05

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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.