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Finding the Fourth Proportional to 127,699.93, 176,225.90 and 74,016.09

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Solution

The fourth proportional to 127,699.93, 176,225.90 and 74,016.09 is: 102,142.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,699.93 : 176,225.90 = 74,016.09 : x
  2. Step 2: Convert to fraction form
    127,699.93/176,225.90 = 74,016.09/x
  3. Step 3: Cross multiply
    127,699.93x = 176,225.90 × 74,016.09
  4. Step 4: Simplify right side
    127,699.93x = 13,043,551,819.21
  5. Step 5: Solve for x
    x = 13,043,551,819.21/127,699.93
  6. Step 6: Final answer
    x = 102,142.20

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1.5x scale

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.