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Finding the Fourth Proportional to 104,055.76, 143,581.55 and 61,019.01

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Solution

The fourth proportional to 104,055.76, 143,581.55 and 61,019.01 is: 84,197.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,055.76 : 143,581.55 = 61,019.01 : x
  2. Step 2: Convert to fraction form
    104,055.76/143,581.55 = 61,019.01/x
  3. Step 3: Cross multiply
    104,055.76x = 143,581.55 × 61,019.01
  4. Step 4: Simplify right side
    104,055.76x = 8,761,204,187.81
  5. Step 5: Solve for x
    x = 8,761,204,187.81/104,055.76
  6. Step 6: Final answer
    x = 84,197.21

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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.