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Finding the Fourth Proportional to 11,985.50, 17,985.54 and 5,060

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Solution

The fourth proportional to 11,985.50, 17,985.54 and 5,060 is: 7,593.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.50 : 17,985.54 = 5,060 : x
  2. Step 2: Convert to fraction form
    11,985.50/17,985.54 = 5,060/x
  3. Step 3: Cross multiply
    11,985.50x = 17,985.54 × 5,060
  4. Step 4: Simplify right side
    11,985.50x = 91,006,832.40
  5. Step 5: Solve for x
    x = 91,006,832.40/11,985.50
  6. Step 6: Final answer
    x = 7,593.08

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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.