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Finding the Fourth Proportional to 61,949.10, 86,903.70 and 61,949.10

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Solution

The fourth proportional to 61,949.10, 86,903.70 and 61,949.10 is: 86,903.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,949.10 : 86,903.70 = 61,949.10 : x
  2. Step 2: Convert to fraction form
    61,949.10/86,903.70 = 61,949.10/x
  3. Step 3: Cross multiply
    61,949.10x = 86,903.70 × 61,949.10
  4. Step 4: Simplify right side
    61,949.10x = 5,383,606,001.67
  5. Step 5: Solve for x
    x = 5,383,606,001.67/61,949.10
  6. Step 6: Final answer
    x = 86,903.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.