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Finding the Fourth Proportional to 86,570.80, 129,829.20 and 33,996.40

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Solution

The fourth proportional to 86,570.80, 129,829.20 and 33,996.40 is: 50,984.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,570.80 : 129,829.20 = 33,996.40 : x
  2. Step 2: Convert to fraction form
    86,570.80/129,829.20 = 33,996.40/x
  3. Step 3: Cross multiply
    86,570.80x = 129,829.20 × 33,996.40
  4. Step 4: Simplify right side
    86,570.80x = 4,413,725,414.88
  5. Step 5: Solve for x
    x = 4,413,725,414.88/86,570.80
  6. Step 6: Final answer
    x = 50,984.00

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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.