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Finding the Fourth Proportional to 61,822.30, 86,638.70 and 61,822.30

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Solution

The fourth proportional to 61,822.30, 86,638.70 and 61,822.30 is: 86,638.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,822.30 : 86,638.70 = 61,822.30 : x
  2. Step 2: Convert to fraction form
    61,822.30/86,638.70 = 61,822.30/x
  3. Step 3: Cross multiply
    61,822.30x = 86,638.70 × 61,822.30
  4. Step 4: Simplify right side
    61,822.30x = 5,356,203,703.01
  5. Step 5: Solve for x
    x = 5,356,203,703.01/61,822.30
  6. Step 6: Final answer
    x = 86,638.70

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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.