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Finding the Fourth Proportional to 109,662.60, 164,493.90 and 70,296.60

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Solution

The fourth proportional to 109,662.60, 164,493.90 and 70,296.60 is: 105,444.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,662.60 : 164,493.90 = 70,296.60 : x
  2. Step 2: Convert to fraction form
    109,662.60/164,493.90 = 70,296.60/x
  3. Step 3: Cross multiply
    109,662.60x = 164,493.90 × 70,296.60
  4. Step 4: Simplify right side
    109,662.60x = 11,563,361,890.74
  5. Step 5: Solve for x
    x = 11,563,361,890.74/109,662.60
  6. Step 6: Final answer
    x = 105,444.90

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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.