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Finding the Fourth Proportional to 72,623.80, 108,935.70 and 60,335.80

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Solution

The fourth proportional to 72,623.80, 108,935.70 and 60,335.80 is: 90,503.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,623.80 : 108,935.70 = 60,335.80 : x
  2. Step 2: Convert to fraction form
    72,623.80/108,935.70 = 60,335.80/x
  3. Step 3: Cross multiply
    72,623.80x = 108,935.70 × 60,335.80
  4. Step 4: Simplify right side
    72,623.80x = 6,572,722,608.06
  5. Step 5: Solve for x
    x = 6,572,722,608.06/72,623.80
  6. Step 6: Final answer
    x = 90,503.70

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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.