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Finding the Fourth Proportional to 103,068.93, 154,625.46 and 31,990.08

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Solution

The fourth proportional to 103,068.93, 154,625.46 and 31,990.08 is: 47,991.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,068.93 : 154,625.46 = 31,990.08 : x
  2. Step 2: Convert to fraction form
    103,068.93/154,625.46 = 31,990.08/x
  3. Step 3: Cross multiply
    103,068.93x = 154,625.46 × 31,990.08
  4. Step 4: Simplify right side
    103,068.93x = 4,946,480,062.31
  5. Step 5: Solve for x
    x = 4,946,480,062.31/103,068.93
  6. Step 6: Final answer
    x = 47,991.96

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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.