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Finding the Fourth Proportional to 127,883.94, 176,423.85 and 121,954.74

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Solution

The fourth proportional to 127,883.94, 176,423.85 and 121,954.74 is: 168,244.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,883.94 : 176,423.85 = 121,954.74 : x
  2. Step 2: Convert to fraction form
    127,883.94/176,423.85 = 121,954.74/x
  3. Step 3: Cross multiply
    127,883.94x = 176,423.85 × 121,954.74
  4. Step 4: Simplify right side
    127,883.94x = 21,515,724,756.55
  5. Step 5: Solve for x
    x = 21,515,724,756.55/127,883.94
  6. Step 6: Final answer
    x = 168,244.15

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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.