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Finding the Fourth Proportional to 56,766.70, 77,770.74 and 54,638.42

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Solution

The fourth proportional to 56,766.70, 77,770.74 and 54,638.42 is: 74,854.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,766.70 : 77,770.74 = 54,638.42 : x
  2. Step 2: Convert to fraction form
    56,766.70/77,770.74 = 54,638.42/x
  3. Step 3: Cross multiply
    56,766.70x = 77,770.74 × 54,638.42
  4. Step 4: Simplify right side
    56,766.70x = 4,249,270,355.83
  5. Step 5: Solve for x
    x = 4,249,270,355.83/56,766.70
  6. Step 6: Final answer
    x = 74,854.98

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.