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Finding the Fourth Proportional to 61,347.61, 92,021.57 and 18,653.41

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Solution

The fourth proportional to 61,347.61, 92,021.57 and 18,653.41 is: 27,980.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,347.61 : 92,021.57 = 18,653.41 : x
  2. Step 2: Convert to fraction form
    61,347.61/92,021.57 = 18,653.41/x
  3. Step 3: Cross multiply
    61,347.61x = 92,021.57 × 18,653.41
  4. Step 4: Simplify right side
    61,347.61x = 1,716,516,074.05
  5. Step 5: Solve for x
    x = 1,716,516,074.05/61,347.61
  6. Step 6: Final answer
    x = 27,980.16

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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.