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Finding the Fourth Proportional to 32,059.80, 48,089.70 and 21,000.60

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Solution

The fourth proportional to 32,059.80, 48,089.70 and 21,000.60 is: 31,500.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,059.80 : 48,089.70 = 21,000.60 : x
  2. Step 2: Convert to fraction form
    32,059.80/48,089.70 = 21,000.60/x
  3. Step 3: Cross multiply
    32,059.80x = 48,089.70 × 21,000.60
  4. Step 4: Simplify right side
    32,059.80x = 1,009,912,553.82
  5. Step 5: Solve for x
    x = 1,009,912,553.82/32,059.80
  6. Step 6: Final answer
    x = 31,500.90

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Half scale
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Double scale
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Similar ratio
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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.