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Finding the Fourth Proportional to 608,157.74, 839,390.92 and 353,655.74

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Solution

The fourth proportional to 608,157.74, 839,390.92 and 353,655.74 is: 488,122.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,157.74 : 839,390.92 = 353,655.74 : x
  2. Step 2: Convert to fraction form
    608,157.74/839,390.92 = 353,655.74/x
  3. Step 3: Cross multiply
    608,157.74x = 839,390.92 × 353,655.74
  4. Step 4: Simplify right side
    608,157.74x = 296,855,416,961.88
  5. Step 5: Solve for x
    x = 296,855,416,961.88/608,157.74
  6. Step 6: Final answer
    x = 488,122.40

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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.