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Finding the Fourth Proportional to 104,123.58, 143,690.73 and 56,377.38

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Solution

The fourth proportional to 104,123.58, 143,690.73 and 56,377.38 is: 77,800.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,123.58 : 143,690.73 = 56,377.38 : x
  2. Step 2: Convert to fraction form
    104,123.58/143,690.73 = 56,377.38/x
  3. Step 3: Cross multiply
    104,123.58x = 143,690.73 × 56,377.38
  4. Step 4: Simplify right side
    104,123.58x = 8,100,906,887.69
  5. Step 5: Solve for x
    x = 8,100,906,887.69/104,123.58
  6. Step 6: Final answer
    x = 77,800.89

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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.