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Finding the Fourth Proportional to 45,703.80, 68,555.70 and 43,954.20

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Solution

The fourth proportional to 45,703.80, 68,555.70 and 43,954.20 is: 65,931.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,703.80 : 68,555.70 = 43,954.20 : x
  2. Step 2: Convert to fraction form
    45,703.80/68,555.70 = 43,954.20/x
  3. Step 3: Cross multiply
    45,703.80x = 68,555.70 × 43,954.20
  4. Step 4: Simplify right side
    45,703.80x = 3,013,310,948.94
  5. Step 5: Solve for x
    x = 3,013,310,948.94/45,703.80
  6. Step 6: Final answer
    x = 65,931.30

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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.