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Finding the Fourth Proportional to 90,543.44, 124,944.14 and 56,549.93

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Solution

The fourth proportional to 90,543.44, 124,944.14 and 56,549.93 is: 78,035.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,543.44 : 124,944.14 = 56,549.93 : x
  2. Step 2: Convert to fraction form
    90,543.44/124,944.14 = 56,549.93/x
  3. Step 3: Cross multiply
    90,543.44x = 124,944.14 × 56,549.93
  4. Step 4: Simplify right side
    90,543.44x = 7,065,581,887.56
  5. Step 5: Solve for x
    x = 7,065,581,887.56/90,543.44
  6. Step 6: Final answer
    x = 78,035.27

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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.