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Finding the Fourth Proportional to 125,485.56, 188,301.78 and 46,654.20

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Solution

The fourth proportional to 125,485.56, 188,301.78 and 46,654.20 is: 70,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,485.56 : 188,301.78 = 46,654.20 : x
  2. Step 2: Convert to fraction form
    125,485.56/188,301.78 = 46,654.20/x
  3. Step 3: Cross multiply
    125,485.56x = 188,301.78 × 46,654.20
  4. Step 4: Simplify right side
    125,485.56x = 8,785,068,904.48
  5. Step 5: Solve for x
    x = 8,785,068,904.48/125,485.56
  6. Step 6: Final answer
    x = 70,008.60

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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.