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Finding the Fourth Proportional to 61,779.48, 92,833.08 and 33,720

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Solution

The fourth proportional to 61,779.48, 92,833.08 and 33,720 is: 50,669.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,779.48 : 92,833.08 = 33,720 : x
  2. Step 2: Convert to fraction form
    61,779.48/92,833.08 = 33,720/x
  3. Step 3: Cross multiply
    61,779.48x = 92,833.08 × 33,720
  4. Step 4: Simplify right side
    61,779.48x = 3,130,331,457.60
  5. Step 5: Solve for x
    x = 3,130,331,457.60/61,779.48
  6. Step 6: Final answer
    x = 50,669.44

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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.