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Finding the Fourth Proportional to 199,642.01, 275,630.33 and 127,085.86

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Solution

The fourth proportional to 199,642.01, 275,630.33 and 127,085.86 is: 175,457.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,642.01 : 275,630.33 = 127,085.86 : x
  2. Step 2: Convert to fraction form
    199,642.01/275,630.33 = 127,085.86/x
  3. Step 3: Cross multiply
    199,642.01x = 275,630.33 × 127,085.86
  4. Step 4: Simplify right side
    199,642.01x = 35,028,717,158.77
  5. Step 5: Solve for x
    x = 35,028,717,158.77/199,642.01
  6. Step 6: Final answer
    x = 175,457.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.