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Finding the Fourth Proportional to 86,762.67, 119,745.33 and 54,934.53

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Solution

The fourth proportional to 86,762.67, 119,745.33 and 54,934.53 is: 75,817.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,762.67 : 119,745.33 = 54,934.53 : x
  2. Step 2: Convert to fraction form
    86,762.67/119,745.33 = 54,934.53/x
  3. Step 3: Cross multiply
    86,762.67x = 119,745.33 × 54,934.53
  4. Step 4: Simplify right side
    86,762.67x = 6,578,153,423.24
  5. Step 5: Solve for x
    x = 6,578,153,423.24/86,762.67
  6. Step 6: Final answer
    x = 75,817.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.