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Finding the Fourth Proportional to 93,921.88, 129,610.78 and 51,480.49

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Solution

The fourth proportional to 93,921.88, 129,610.78 and 51,480.49 is: 71,042.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,921.88 : 129,610.78 = 51,480.49 : x
  2. Step 2: Convert to fraction form
    93,921.88/129,610.78 = 51,480.49/x
  3. Step 3: Cross multiply
    93,921.88x = 129,610.78 × 51,480.49
  4. Step 4: Simplify right side
    93,921.88x = 6,672,426,463.68
  5. Step 5: Solve for x
    x = 6,672,426,463.68/93,921.88
  6. Step 6: Final answer
    x = 71,042.30

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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.