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Finding the Fourth Proportional to 91,018.69, 136,554.91 and 46,676.50

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Solution

The fourth proportional to 91,018.69, 136,554.91 and 46,676.50 is: 70,028.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,018.69 : 136,554.91 = 46,676.50 : x
  2. Step 2: Convert to fraction form
    91,018.69/136,554.91 = 46,676.50/x
  3. Step 3: Cross multiply
    91,018.69x = 136,554.91 × 46,676.50
  4. Step 4: Simplify right side
    91,018.69x = 6,373,905,829.21
  5. Step 5: Solve for x
    x = 6,373,905,829.21/91,018.69
  6. Step 6: Final answer
    x = 70,028.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.