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Finding the Fourth Proportional to 57,981.99, 79,415.61 and 54,577.56

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Solution

The fourth proportional to 57,981.99, 79,415.61 and 54,577.56 is: 74,752.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,981.99 : 79,415.61 = 54,577.56 : x
  2. Step 2: Convert to fraction form
    57,981.99/79,415.61 = 54,577.56/x
  3. Step 3: Cross multiply
    57,981.99x = 79,415.61 × 54,577.56
  4. Step 4: Simplify right side
    57,981.99x = 4,334,310,219.71
  5. Step 5: Solve for x
    x = 4,334,310,219.71/57,981.99
  6. Step 6: Final answer
    x = 74,752.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.