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Finding the Fourth Proportional to 61,347.35, 92,021.18 and 18,653.18

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Solution

The fourth proportional to 61,347.35, 92,021.18 and 18,653.18 is: 27,979.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,347.35 : 92,021.18 = 18,653.18 : x
  2. Step 2: Convert to fraction form
    61,347.35/92,021.18 = 18,653.18/x
  3. Step 3: Cross multiply
    61,347.35x = 92,021.18 × 18,653.18
  4. Step 4: Simplify right side
    61,347.35x = 1,716,487,080.98
  5. Step 5: Solve for x
    x = 1,716,487,080.98/61,347.35
  6. Step 6: Final answer
    x = 27,979.81

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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.