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Finding the Fourth Proportional to 58,268.80, 80,411.20 and 33,116.80

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Solution

The fourth proportional to 58,268.80, 80,411.20 and 33,116.80 is: 45,701.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,268.80 : 80,411.20 = 33,116.80 : x
  2. Step 2: Convert to fraction form
    58,268.80/80,411.20 = 33,116.80/x
  3. Step 3: Cross multiply
    58,268.80x = 80,411.20 × 33,116.80
  4. Step 4: Simplify right side
    58,268.80x = 2,662,961,628.16
  5. Step 5: Solve for x
    x = 2,662,961,628.16/58,268.80
  6. Step 6: Final answer
    x = 45,701.33

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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.