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Finding the Fourth Proportional to 97,796.80, 146,234.40 and 72,913.60

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Solution

The fourth proportional to 97,796.80, 146,234.40 and 72,913.60 is: 109,026.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,796.80 : 146,234.40 = 72,913.60 : x
  2. Step 2: Convert to fraction form
    97,796.80/146,234.40 = 72,913.60/x
  3. Step 3: Cross multiply
    97,796.80x = 146,234.40 × 72,913.60
  4. Step 4: Simplify right side
    97,796.80x = 10,662,476,547.84
  5. Step 5: Solve for x
    x = 10,662,476,547.84/97,796.80
  6. Step 6: Final answer
    x = 109,026.84

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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.