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Finding the Fourth Proportional to 122,909.40, 184,291.20 and 63,860.40

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Solution

The fourth proportional to 122,909.40, 184,291.20 and 63,860.40 is: 95,752.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,909.40 : 184,291.20 = 63,860.40 : x
  2. Step 2: Convert to fraction form
    122,909.40/184,291.20 = 63,860.40/x
  3. Step 3: Cross multiply
    122,909.40x = 184,291.20 × 63,860.40
  4. Step 4: Simplify right side
    122,909.40x = 11,768,909,748.48
  5. Step 5: Solve for x
    x = 11,768,909,748.48/122,909.40
  6. Step 6: Final answer
    x = 95,752.72

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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.