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Finding the Fourth Proportional to 103,980.84, 155,969.88 and 25,094.70

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Solution

The fourth proportional to 103,980.84, 155,969.88 and 25,094.70 is: 37,641.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,980.84 : 155,969.88 = 25,094.70 : x
  2. Step 2: Convert to fraction form
    103,980.84/155,969.88 = 25,094.70/x
  3. Step 3: Cross multiply
    103,980.84x = 155,969.88 × 25,094.70
  4. Step 4: Simplify right side
    103,980.84x = 3,914,017,347.64
  5. Step 5: Solve for x
    x = 3,914,017,347.64/103,980.84
  6. Step 6: Final answer
    x = 37,641.72

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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.