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Finding the Fourth Proportional to 55,407.80, 83,087.40 and 22,116.80

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Solution

The fourth proportional to 55,407.80, 83,087.40 and 22,116.80 is: 33,165.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,407.80 : 83,087.40 = 22,116.80 : x
  2. Step 2: Convert to fraction form
    55,407.80/83,087.40 = 22,116.80/x
  3. Step 3: Cross multiply
    55,407.80x = 83,087.40 × 22,116.80
  4. Step 4: Simplify right side
    55,407.80x = 1,837,627,408.32
  5. Step 5: Solve for x
    x = 1,837,627,408.32/55,407.80
  6. Step 6: Final answer
    x = 33,165.50

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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.