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Finding the Fourth Proportional to 59,721.80, 89,582.70 and 53,270.60

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Solution

The fourth proportional to 59,721.80, 89,582.70 and 53,270.60 is: 79,905.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,721.80 : 89,582.70 = 53,270.60 : x
  2. Step 2: Convert to fraction form
    59,721.80/89,582.70 = 53,270.60/x
  3. Step 3: Cross multiply
    59,721.80x = 89,582.70 × 53,270.60
  4. Step 4: Simplify right side
    59,721.80x = 4,772,124,178.62
  5. Step 5: Solve for x
    x = 4,772,124,178.62/59,721.80
  6. Step 6: Final answer
    x = 79,905.90

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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.