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Finding the Fourth Proportional to 55,793.80, 83,787.90 and 39,269.80

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Solution

The fourth proportional to 55,793.80, 83,787.90 and 39,269.80 is: 58,973.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,793.80 : 83,787.90 = 39,269.80 : x
  2. Step 2: Convert to fraction form
    55,793.80/83,787.90 = 39,269.80/x
  3. Step 3: Cross multiply
    55,793.80x = 83,787.90 × 39,269.80
  4. Step 4: Simplify right side
    55,793.80x = 3,290,334,075.42
  5. Step 5: Solve for x
    x = 3,290,334,075.42/55,793.80
  6. Step 6: Final answer
    x = 58,973.11

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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.