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Finding the Fourth Proportional to 48,266.70, 72,421.65 and 21,957.90

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Solution

The fourth proportional to 48,266.70, 72,421.65 and 21,957.90 is: 32,946.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,266.70 : 72,421.65 = 21,957.90 : x
  2. Step 2: Convert to fraction form
    48,266.70/72,421.65 = 21,957.90/x
  3. Step 3: Cross multiply
    48,266.70x = 72,421.65 × 21,957.90
  4. Step 4: Simplify right side
    48,266.70x = 1,590,227,348.54
  5. Step 5: Solve for x
    x = 1,590,227,348.54/48,266.70
  6. Step 6: Final answer
    x = 32,946.68

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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.