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Finding the Fourth Proportional to 109,967.60, 164,805.60 and 97,428.80

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Solution

The fourth proportional to 109,967.60, 164,805.60 and 97,428.80 is: 146,014.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,967.60 : 164,805.60 = 97,428.80 : x
  2. Step 2: Convert to fraction form
    109,967.60/164,805.60 = 97,428.80/x
  3. Step 3: Cross multiply
    109,967.60x = 164,805.60 × 97,428.80
  4. Step 4: Simplify right side
    109,967.60x = 16,056,811,841.28
  5. Step 5: Solve for x
    x = 16,056,811,841.28/109,967.60
  6. Step 6: Final answer
    x = 146,014.02

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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.