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Finding the Fourth Proportional to 58,766.40, 81,028.80 and 48,124.80

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Solution

The fourth proportional to 58,766.40, 81,028.80 and 48,124.80 is: 66,355.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,766.40 : 81,028.80 = 48,124.80 : x
  2. Step 2: Convert to fraction form
    58,766.40/81,028.80 = 48,124.80/x
  3. Step 3: Cross multiply
    58,766.40x = 81,028.80 × 48,124.80
  4. Step 4: Simplify right side
    58,766.40x = 3,899,494,794.24
  5. Step 5: Solve for x
    x = 3,899,494,794.24/58,766.40
  6. Step 6: Final answer
    x = 66,355.86

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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.