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Finding the Fourth Proportional to 171,036.10, 256,554.15 and 86,763.70

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Solution

The fourth proportional to 171,036.10, 256,554.15 and 86,763.70 is: 130,145.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,036.10 : 256,554.15 = 86,763.70 : x
  2. Step 2: Convert to fraction form
    171,036.10/256,554.15 = 86,763.70/x
  3. Step 3: Cross multiply
    171,036.10x = 256,554.15 × 86,763.70
  4. Step 4: Simplify right side
    171,036.10x = 22,259,587,304.36
  5. Step 5: Solve for x
    x = 22,259,587,304.36/171,036.10
  6. Step 6: Final answer
    x = 130,145.55

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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.