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Finding the Fourth Proportional to 58,710.80, 81,024.36 and 33,219.38

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Solution

The fourth proportional to 58,710.80, 81,024.36 and 33,219.38 is: 45,844.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,710.80 : 81,024.36 = 33,219.38 : x
  2. Step 2: Convert to fraction form
    58,710.80/81,024.36 = 33,219.38/x
  3. Step 3: Cross multiply
    58,710.80x = 81,024.36 × 33,219.38
  4. Step 4: Simplify right side
    58,710.80x = 2,691,579,004.10
  5. Step 5: Solve for x
    x = 2,691,579,004.10/58,710.80
  6. Step 6: Final answer
    x = 45,844.70

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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.