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Finding the Fourth Proportional to 58,490.73, 80,782.79 and 39,595.05

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Solution

The fourth proportional to 58,490.73, 80,782.79 and 39,595.05 is: 54,685.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,490.73 : 80,782.79 = 39,595.05 : x
  2. Step 2: Convert to fraction form
    58,490.73/80,782.79 = 39,595.05/x
  3. Step 3: Cross multiply
    58,490.73x = 80,782.79 × 39,595.05
  4. Step 4: Simplify right side
    58,490.73x = 3,198,598,411.21
  5. Step 5: Solve for x
    x = 3,198,598,411.21/58,490.73
  6. Step 6: Final answer
    x = 54,685.56

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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.