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Finding the Fourth Proportional to 169,889.31, 234,441.18 and 93,407.90

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Solution

The fourth proportional to 169,889.31, 234,441.18 and 93,407.90 is: 128,899.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,889.31 : 234,441.18 = 93,407.90 : x
  2. Step 2: Convert to fraction form
    169,889.31/234,441.18 = 93,407.90/x
  3. Step 3: Cross multiply
    169,889.31x = 234,441.18 × 93,407.90
  4. Step 4: Simplify right side
    169,889.31x = 21,898,657,125.12
  5. Step 5: Solve for x
    x = 21,898,657,125.12/169,889.31
  6. Step 6: Final answer
    x = 128,899.56

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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.