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Finding the Fourth Proportional to 161,434.70, 222,779.89 and 89,814.70

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Solution

The fourth proportional to 161,434.70, 222,779.89 and 89,814.70 is: 123,944.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,434.70 : 222,779.89 = 89,814.70 : x
  2. Step 2: Convert to fraction form
    161,434.70/222,779.89 = 89,814.70/x
  3. Step 3: Cross multiply
    161,434.70x = 222,779.89 × 89,814.70
  4. Step 4: Simplify right side
    161,434.70x = 20,008,908,986.38
  5. Step 5: Solve for x
    x = 20,008,908,986.38/161,434.70
  6. Step 6: Final answer
    x = 123,944.29

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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.