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Finding the Fourth Proportional to 97,730.80, 146,596.20 and 87,881.20

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Solution

The fourth proportional to 97,730.80, 146,596.20 and 87,881.20 is: 131,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,730.80 : 146,596.20 = 87,881.20 : x
  2. Step 2: Convert to fraction form
    97,730.80/146,596.20 = 87,881.20/x
  3. Step 3: Cross multiply
    97,730.80x = 146,596.20 × 87,881.20
  4. Step 4: Simplify right side
    97,730.80x = 12,883,049,971.44
  5. Step 5: Solve for x
    x = 12,883,049,971.44/97,730.80
  6. Step 6: Final answer
    x = 131,821.80

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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.