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Finding the Fourth Proportional to 53,788.80, 80,683.20 and 41,332.80

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Solution

The fourth proportional to 53,788.80, 80,683.20 and 41,332.80 is: 61,999.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,788.80 : 80,683.20 = 41,332.80 : x
  2. Step 2: Convert to fraction form
    53,788.80/80,683.20 = 41,332.80/x
  3. Step 3: Cross multiply
    53,788.80x = 80,683.20 × 41,332.80
  4. Step 4: Simplify right side
    53,788.80x = 3,334,862,568.96
  5. Step 5: Solve for x
    x = 3,334,862,568.96/53,788.80
  6. Step 6: Final answer
    x = 61,999.20

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1.5x scale

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.