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Finding the Fourth Proportional to 81,597.72, 122,158.83 and 60,630.70

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Solution

The fourth proportional to 81,597.72, 122,158.83 and 60,630.70 is: 90,769.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,597.72 : 122,158.83 = 60,630.70 : x
  2. Step 2: Convert to fraction form
    81,597.72/122,158.83 = 60,630.70/x
  3. Step 3: Cross multiply
    81,597.72x = 122,158.83 × 60,630.70
  4. Step 4: Simplify right side
    81,597.72x = 7,406,575,374.08
  5. Step 5: Solve for x
    x = 7,406,575,374.08/81,597.72
  6. Step 6: Final answer
    x = 90,769.39

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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.