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Finding the Fourth Proportional to 122,965.70, 184,448.55 and 89,528.90

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Solution

The fourth proportional to 122,965.70, 184,448.55 and 89,528.90 is: 134,293.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,965.70 : 184,448.55 = 89,528.90 : x
  2. Step 2: Convert to fraction form
    122,965.70/184,448.55 = 89,528.90/x
  3. Step 3: Cross multiply
    122,965.70x = 184,448.55 × 89,528.90
  4. Step 4: Simplify right side
    122,965.70x = 16,513,475,788.10
  5. Step 5: Solve for x
    x = 16,513,475,788.10/122,965.70
  6. Step 6: Final answer
    x = 134,293.35

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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.