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Finding the Fourth Proportional to 59,041.73, 81,431.50 and 40,899.30

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Solution

The fourth proportional to 59,041.73, 81,431.50 and 40,899.30 is: 56,409.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,041.73 : 81,431.50 = 40,899.30 : x
  2. Step 2: Convert to fraction form
    59,041.73/81,431.50 = 40,899.30/x
  3. Step 3: Cross multiply
    59,041.73x = 81,431.50 × 40,899.30
  4. Step 4: Simplify right side
    59,041.73x = 3,330,490,901.99
  5. Step 5: Solve for x
    x = 3,330,490,901.99/59,041.73
  6. Step 6: Final answer
    x = 56,409.10

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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.