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Finding the Fourth Proportional to 127,812.58, 176,366.89 and 74,086.49

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Solution

The fourth proportional to 127,812.58, 176,366.89 and 74,086.49 is: 102,230.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,812.58 : 176,366.89 = 74,086.49 : x
  2. Step 2: Convert to fraction form
    127,812.58/176,366.89 = 74,086.49/x
  3. Step 3: Cross multiply
    127,812.58x = 176,366.89 × 74,086.49
  4. Step 4: Simplify right side
    127,812.58x = 13,066,403,832.32
  5. Step 5: Solve for x
    x = 13,066,403,832.32/127,812.58
  6. Step 6: Final answer
    x = 102,230.97

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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.