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Finding the Fourth Proportional to 665,709.84, 998,525.88 and 192,384.72

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Solution

The fourth proportional to 665,709.84, 998,525.88 and 192,384.72 is: 288,565.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,709.84 : 998,525.88 = 192,384.72 : x
  2. Step 2: Convert to fraction form
    665,709.84/998,525.88 = 192,384.72/x
  3. Step 3: Cross multiply
    665,709.84x = 998,525.88 × 192,384.72
  4. Step 4: Simplify right side
    665,709.84x = 192,101,121,836.55
  5. Step 5: Solve for x
    x = 192,101,121,836.55/665,709.84
  6. Step 6: Final answer
    x = 288,565.84

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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.