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Finding the Fourth Proportional to 98,503.76, 135,919.36 and 56,063

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Solution

The fourth proportional to 98,503.76, 135,919.36 and 56,063 is: 77,357.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,503.76 : 135,919.36 = 56,063 : x
  2. Step 2: Convert to fraction form
    98,503.76/135,919.36 = 56,063/x
  3. Step 3: Cross multiply
    98,503.76x = 135,919.36 × 56,063
  4. Step 4: Simplify right side
    98,503.76x = 7,620,047,079.68
  5. Step 5: Solve for x
    x = 7,620,047,079.68/98,503.76
  6. Step 6: Final answer
    x = 77,357.93

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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.