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Finding the Fourth Proportional to 104,064.63, 143,609.61 and 56,317.96

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Solution

The fourth proportional to 104,064.63, 143,609.61 and 56,317.96 is: 77,719.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,064.63 : 143,609.61 = 56,317.96 : x
  2. Step 2: Convert to fraction form
    104,064.63/143,609.61 = 56,317.96/x
  3. Step 3: Cross multiply
    104,064.63x = 143,609.61 × 56,317.96
  4. Step 4: Simplify right side
    104,064.63x = 8,087,800,271.60
  5. Step 5: Solve for x
    x = 8,087,800,271.60/104,064.63
  6. Step 6: Final answer
    x = 77,719.01

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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.