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Finding the Fourth Proportional to 135,792.56, 203,565.72 and 73,390.16

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Solution

The fourth proportional to 135,792.56, 203,565.72 and 73,390.16 is: 110,018.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,792.56 : 203,565.72 = 73,390.16 : x
  2. Step 2: Convert to fraction form
    135,792.56/203,565.72 = 73,390.16/x
  3. Step 3: Cross multiply
    135,792.56x = 203,565.72 × 73,390.16
  4. Step 4: Simplify right side
    135,792.56x = 14,939,720,761.32
  5. Step 5: Solve for x
    x = 14,939,720,761.32/135,792.56
  6. Step 6: Final answer
    x = 110,018.70

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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.