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Finding the Fourth Proportional to 127,999, 176,638.62 and 71,410.36

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Solution

The fourth proportional to 127,999, 176,638.62 and 71,410.36 is: 98,546.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,999 : 176,638.62 = 71,410.36 : x
  2. Step 2: Convert to fraction form
    127,999/176,638.62 = 71,410.36/x
  3. Step 3: Cross multiply
    127,999x = 176,638.62 × 71,410.36
  4. Step 4: Simplify right side
    127,999x = 12,613,827,444.10
  5. Step 5: Solve for x
    x = 12,613,827,444.10/127,999
  6. Step 6: Final answer
    x = 98,546.30

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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.