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Finding the Fourth Proportional to 91,186.67, 125,848.28 and 75,846.15

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Solution

The fourth proportional to 91,186.67, 125,848.28 and 75,846.15 is: 104,676.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,186.67 : 125,848.28 = 75,846.15 : x
  2. Step 2: Convert to fraction form
    91,186.67/125,848.28 = 75,846.15/x
  3. Step 3: Cross multiply
    91,186.67x = 125,848.28 × 75,846.15
  4. Step 4: Simplify right side
    91,186.67x = 9,545,107,142.89
  5. Step 5: Solve for x
    x = 9,545,107,142.89/91,186.67
  6. Step 6: Final answer
    x = 104,676.57

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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.