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Finding the Fourth Proportional to 171,166.56, 256,810.64 and 76,388.12

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Solution

The fourth proportional to 171,166.56, 256,810.64 and 76,388.12 is: 114,609.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,166.56 : 256,810.64 = 76,388.12 : x
  2. Step 2: Convert to fraction form
    171,166.56/256,810.64 = 76,388.12/x
  3. Step 3: Cross multiply
    171,166.56x = 256,810.64 × 76,388.12
  4. Step 4: Simplify right side
    171,166.56x = 19,617,281,985.60
  5. Step 5: Solve for x
    x = 19,617,281,985.60/171,166.56
  6. Step 6: Final answer
    x = 114,609.31

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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.