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Finding the Fourth Proportional to 73,018.96, 109,486.38 and 28,593.70

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Solution

The fourth proportional to 73,018.96, 109,486.38 and 28,593.70 is: 42,874.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,018.96 : 109,486.38 = 28,593.70 : x
  2. Step 2: Convert to fraction form
    73,018.96/109,486.38 = 28,593.70/x
  3. Step 3: Cross multiply
    73,018.96x = 109,486.38 × 28,593.70
  4. Step 4: Simplify right side
    73,018.96x = 3,130,620,703.81
  5. Step 5: Solve for x
    x = 3,130,620,703.81/73,018.96
  6. Step 6: Final answer
    x = 42,874.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.