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Finding the Fourth Proportional to 127,019.33, 190,391.90 and 55,878.65

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Solution

The fourth proportional to 127,019.33, 190,391.90 and 55,878.65 is: 83,757.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,019.33 : 190,391.90 = 55,878.65 : x
  2. Step 2: Convert to fraction form
    127,019.33/190,391.90 = 55,878.65/x
  3. Step 3: Cross multiply
    127,019.33x = 190,391.90 × 55,878.65
  4. Step 4: Simplify right side
    127,019.33x = 10,638,842,342.94
  5. Step 5: Solve for x
    x = 10,638,842,342.94/127,019.33
  6. Step 6: Final answer
    x = 83,757.66

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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.