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Finding the Fourth Proportional to 90,475.80, 124,879.50 and 58,232.28

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Solution

The fourth proportional to 90,475.80, 124,879.50 and 58,232.28 is: 80,375.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,475.80 : 124,879.50 = 58,232.28 : x
  2. Step 2: Convert to fraction form
    90,475.80/124,879.50 = 58,232.28/x
  3. Step 3: Cross multiply
    90,475.80x = 124,879.50 × 58,232.28
  4. Step 4: Simplify right side
    90,475.80x = 7,272,018,010.26
  5. Step 5: Solve for x
    x = 7,272,018,010.26/90,475.80
  6. Step 6: Final answer
    x = 80,375.28

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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.