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Finding the Fourth Proportional to 72,424.76, 99,945.84 and 40,593.66

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Solution

The fourth proportional to 72,424.76, 99,945.84 and 40,593.66 is: 56,019.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,424.76 : 99,945.84 = 40,593.66 : x
  2. Step 2: Convert to fraction form
    72,424.76/99,945.84 = 40,593.66/x
  3. Step 3: Cross multiply
    72,424.76x = 99,945.84 × 40,593.66
  4. Step 4: Simplify right side
    72,424.76x = 4,057,167,447.37
  5. Step 5: Solve for x
    x = 4,057,167,447.37/72,424.76
  6. Step 6: Final answer
    x = 56,019.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.