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Finding the Fourth Proportional to 108,664.40, 163,004.70 and 38,534.60

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Solution

The fourth proportional to 108,664.40, 163,004.70 and 38,534.60 is: 57,804.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,664.40 : 163,004.70 = 38,534.60 : x
  2. Step 2: Convert to fraction form
    108,664.40/163,004.70 = 38,534.60/x
  3. Step 3: Cross multiply
    108,664.40x = 163,004.70 × 38,534.60
  4. Step 4: Simplify right side
    108,664.40x = 6,281,320,912.62
  5. Step 5: Solve for x
    x = 6,281,320,912.62/108,664.40
  6. Step 6: Final answer
    x = 57,804.77

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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.