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Finding the Fourth Proportional to 86,569.80, 129,827.70 and 33,995.40

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Solution

The fourth proportional to 86,569.80, 129,827.70 and 33,995.40 is: 50,982.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,569.80 : 129,827.70 = 33,995.40 : x
  2. Step 2: Convert to fraction form
    86,569.80/129,827.70 = 33,995.40/x
  3. Step 3: Cross multiply
    86,569.80x = 129,827.70 × 33,995.40
  4. Step 4: Simplify right side
    86,569.80x = 4,413,544,592.58
  5. Step 5: Solve for x
    x = 4,413,544,592.58/86,569.80
  6. Step 6: Final answer
    x = 50,982.50

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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.