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Finding the Fourth Proportional to 61,621.80, 92,432.70 and 53,845.80

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Solution

The fourth proportional to 61,621.80, 92,432.70 and 53,845.80 is: 80,768.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,621.80 : 92,432.70 = 53,845.80 : x
  2. Step 2: Convert to fraction form
    61,621.80/92,432.70 = 53,845.80/x
  3. Step 3: Cross multiply
    61,621.80x = 92,432.70 × 53,845.80
  4. Step 4: Simplify right side
    61,621.80x = 4,977,112,677.66
  5. Step 5: Solve for x
    x = 4,977,112,677.66/61,621.80
  6. Step 6: Final answer
    x = 80,768.70

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1.5x scale

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.