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Finding the Fourth Proportional to 136,123.59, 187,850.71 and 75,692.94

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Solution

The fourth proportional to 136,123.59, 187,850.71 and 75,692.94 is: 104,456.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,123.59 : 187,850.71 = 75,692.94 : x
  2. Step 2: Convert to fraction form
    136,123.59/187,850.71 = 75,692.94/x
  3. Step 3: Cross multiply
    136,123.59x = 187,850.71 × 75,692.94
  4. Step 4: Simplify right side
    136,123.59x = 14,218,971,203.27
  5. Step 5: Solve for x
    x = 14,218,971,203.27/136,123.59
  6. Step 6: Final answer
    x = 104,456.33

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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.