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Finding the Fourth Proportional to 122,986.80, 184,426.20 and 56,404.80

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Solution

The fourth proportional to 122,986.80, 184,426.20 and 56,404.80 is: 84,582.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,986.80 : 184,426.20 = 56,404.80 : x
  2. Step 2: Convert to fraction form
    122,986.80/184,426.20 = 56,404.80/x
  3. Step 3: Cross multiply
    122,986.80x = 184,426.20 × 56,404.80
  4. Step 4: Simplify right side
    122,986.80x = 10,402,522,925.76
  5. Step 5: Solve for x
    x = 10,402,522,925.76/122,986.80
  6. Step 6: Final answer
    x = 84,582.43

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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.