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Finding the Fourth Proportional to 122,372.60, 183,558.90 and 75,716.60

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Solution

The fourth proportional to 122,372.60, 183,558.90 and 75,716.60 is: 113,574.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,372.60 : 183,558.90 = 75,716.60 : x
  2. Step 2: Convert to fraction form
    122,372.60/183,558.90 = 75,716.60/x
  3. Step 3: Cross multiply
    122,372.60x = 183,558.90 × 75,716.60
  4. Step 4: Simplify right side
    122,372.60x = 13,898,455,807.74
  5. Step 5: Solve for x
    x = 13,898,455,807.74/122,372.60
  6. Step 6: Final answer
    x = 113,574.90

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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.