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Finding the Fourth Proportional to 161,308.71, 222,604.79 and 89,688.11

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Solution

The fourth proportional to 161,308.71, 222,604.79 and 89,688.11 is: 123,768.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,308.71 : 222,604.79 = 89,688.11 : x
  2. Step 2: Convert to fraction form
    161,308.71/222,604.79 = 89,688.11/x
  3. Step 3: Cross multiply
    161,308.71x = 222,604.79 × 89,688.11
  4. Step 4: Simplify right side
    161,308.71x = 19,965,001,330.58
  5. Step 5: Solve for x
    x = 19,965,001,330.58/161,308.71
  6. Step 6: Final answer
    x = 123,768.90

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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.