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Finding the Fourth Proportional to 32,005.80, 48,008.70 and 20,946.60

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Solution

The fourth proportional to 32,005.80, 48,008.70 and 20,946.60 is: 31,419.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,005.80 : 48,008.70 = 20,946.60 : x
  2. Step 2: Convert to fraction form
    32,005.80/48,008.70 = 20,946.60/x
  3. Step 3: Cross multiply
    32,005.80x = 48,008.70 × 20,946.60
  4. Step 4: Simplify right side
    32,005.80x = 1,005,619,035.42
  5. Step 5: Solve for x
    x = 1,005,619,035.42/32,005.80
  6. Step 6: Final answer
    x = 31,419.90

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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.