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Finding the Fourth Proportional to 97,693.60, 146,540.40 and 31,133.20

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Solution

The fourth proportional to 97,693.60, 146,540.40 and 31,133.20 is: 46,699.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,693.60 : 146,540.40 = 31,133.20 : x
  2. Step 2: Convert to fraction form
    97,693.60/146,540.40 = 31,133.20/x
  3. Step 3: Cross multiply
    97,693.60x = 146,540.40 × 31,133.20
  4. Step 4: Simplify right side
    97,693.60x = 4,562,271,581.28
  5. Step 5: Solve for x
    x = 4,562,271,581.28/97,693.60
  6. Step 6: Final answer
    x = 46,699.80

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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.