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Finding the Fourth Proportional to 61,605.20, 92,407.80 and 58,397.60

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Solution

The fourth proportional to 61,605.20, 92,407.80 and 58,397.60 is: 87,596.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,605.20 : 92,407.80 = 58,397.60 : x
  2. Step 2: Convert to fraction form
    61,605.20/92,407.80 = 58,397.60/x
  3. Step 3: Cross multiply
    61,605.20x = 92,407.80 × 58,397.60
  4. Step 4: Simplify right side
    61,605.20x = 5,396,393,741.28
  5. Step 5: Solve for x
    x = 5,396,393,741.28/61,605.20
  6. Step 6: Final answer
    x = 87,596.40

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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.