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Finding the Fourth Proportional to 104,402.39, 144,078.08 and 56,655.77

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Solution

The fourth proportional to 104,402.39, 144,078.08 and 56,655.77 is: 78,186.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,402.39 : 144,078.08 = 56,655.77 : x
  2. Step 2: Convert to fraction form
    104,402.39/144,078.08 = 56,655.77/x
  3. Step 3: Cross multiply
    104,402.39x = 144,078.08 × 56,655.77
  4. Step 4: Simplify right side
    104,402.39x = 8,162,853,558.85
  5. Step 5: Solve for x
    x = 8,162,853,558.85/104,402.39
  6. Step 6: Final answer
    x = 78,186.47

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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.