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Finding the Fourth Proportional to 161,940.71, 223,478.49 and 90,325.37

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Solution

The fourth proportional to 161,940.71, 223,478.49 and 90,325.37 is: 124,649.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,940.71 : 223,478.49 = 90,325.37 : x
  2. Step 2: Convert to fraction form
    161,940.71/223,478.49 = 90,325.37/x
  3. Step 3: Cross multiply
    161,940.71x = 223,478.49 × 90,325.37
  4. Step 4: Simplify right side
    161,940.71x = 20,185,776,178.90
  5. Step 5: Solve for x
    x = 20,185,776,178.90/161,940.71
  6. Step 6: Final answer
    x = 124,649.18

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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.