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Finding the Fourth Proportional to 122,955.60, 184,433.40 and 108,521.40

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Solution

The fourth proportional to 122,955.60, 184,433.40 and 108,521.40 is: 162,782.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,955.60 : 184,433.40 = 108,521.40 : x
  2. Step 2: Convert to fraction form
    122,955.60/184,433.40 = 108,521.40/x
  3. Step 3: Cross multiply
    122,955.60x = 184,433.40 × 108,521.40
  4. Step 4: Simplify right side
    122,955.60x = 20,014,970,774.76
  5. Step 5: Solve for x
    x = 20,014,970,774.76/122,955.60
  6. Step 6: Final answer
    x = 162,782.10

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1.5x scale

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.