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Finding the Fourth Proportional to 219,885.80, 308,462.20 and 219,885.80

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Solution

The fourth proportional to 219,885.80, 308,462.20 and 219,885.80 is: 308,462.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,885.80 : 308,462.20 = 219,885.80 : x
  2. Step 2: Convert to fraction form
    219,885.80/308,462.20 = 219,885.80/x
  3. Step 3: Cross multiply
    219,885.80x = 308,462.20 × 219,885.80
  4. Step 4: Simplify right side
    219,885.80x = 67,826,457,616.76
  5. Step 5: Solve for x
    x = 67,826,457,616.76/219,885.80
  6. Step 6: Final answer
    x = 308,462.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.