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Finding the Fourth Proportional to 127,881.69, 176,420.75 and 121,952.49

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Solution

The fourth proportional to 127,881.69, 176,420.75 and 121,952.49 is: 168,241.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,881.69 : 176,420.75 = 121,952.49 : x
  2. Step 2: Convert to fraction form
    127,881.69/176,420.75 = 121,952.49/x
  3. Step 3: Cross multiply
    127,881.69x = 176,420.75 × 121,952.49
  4. Step 4: Simplify right side
    127,881.69x = 21,514,949,140.41
  5. Step 5: Solve for x
    x = 21,514,949,140.41/127,881.69
  6. Step 6: Final answer
    x = 168,241.04

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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.