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Finding the Fourth Proportional to 39,881.40, 59,822.10 and 31,068.60

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Solution

The fourth proportional to 39,881.40, 59,822.10 and 31,068.60 is: 46,602.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,881.40 : 59,822.10 = 31,068.60 : x
  2. Step 2: Convert to fraction form
    39,881.40/59,822.10 = 31,068.60/x
  3. Step 3: Cross multiply
    39,881.40x = 59,822.10 × 31,068.60
  4. Step 4: Simplify right side
    39,881.40x = 1,858,588,896.06
  5. Step 5: Solve for x
    x = 1,858,588,896.06/39,881.40
  6. Step 6: Final answer
    x = 46,602.90

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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.