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Finding the Fourth Proportional to 665,300.05, 997,950.08 and 192,000.85

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Solution

The fourth proportional to 665,300.05, 997,950.08 and 192,000.85 is: 288,001.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,300.05 : 997,950.08 = 192,000.85 : x
  2. Step 2: Convert to fraction form
    665,300.05/997,950.08 = 192,000.85/x
  3. Step 3: Cross multiply
    665,300.05x = 997,950.08 × 192,000.85
  4. Step 4: Simplify right side
    665,300.05x = 191,607,262,657.56
  5. Step 5: Solve for x
    x = 191,607,262,657.56/665,300.05
  6. Step 6: Final answer
    x = 288,001.28

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Double scale
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Similar ratio
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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.