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Finding the Fourth Proportional to 139,365.01, 192,403.50 and 91,756.75

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Solution

The fourth proportional to 139,365.01, 192,403.50 and 91,756.75 is: 126,676.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,365.01 : 192,403.50 = 91,756.75 : x
  2. Step 2: Convert to fraction form
    139,365.01/192,403.50 = 91,756.75/x
  3. Step 3: Cross multiply
    139,365.01x = 192,403.50 × 91,756.75
  4. Step 4: Simplify right side
    139,365.01x = 17,654,319,848.63
  5. Step 5: Solve for x
    x = 17,654,319,848.63/139,365.01
  6. Step 6: Final answer
    x = 126,676.85

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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.