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Finding the Fourth Proportional to 139,135.80, 191,938.75 and 93,755.55

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Solution

The fourth proportional to 139,135.80, 191,938.75 and 93,755.55 is: 129,336.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,135.80 : 191,938.75 = 93,755.55 : x
  2. Step 2: Convert to fraction form
    139,135.80/191,938.75 = 93,755.55/x
  3. Step 3: Cross multiply
    139,135.80x = 191,938.75 × 93,755.55
  4. Step 4: Simplify right side
    139,135.80x = 17,995,323,072.56
  5. Step 5: Solve for x
    x = 17,995,323,072.56/139,135.80
  6. Step 6: Final answer
    x = 129,336.40

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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.