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Finding the Fourth Proportional to 61,702.80, 86,580.75 and 61,702.80

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Solution

The fourth proportional to 61,702.80, 86,580.75 and 61,702.80 is: 86,580.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,702.80 : 86,580.75 = 61,702.80 : x
  2. Step 2: Convert to fraction form
    61,702.80/86,580.75 = 61,702.80/x
  3. Step 3: Cross multiply
    61,702.80x = 86,580.75 × 61,702.80
  4. Step 4: Simplify right side
    61,702.80x = 5,342,274,701.10
  5. Step 5: Solve for x
    x = 5,342,274,701.10/61,702.80
  6. Step 6: Final answer
    x = 86,580.75

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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.