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Finding the Fourth Proportional to 78,559.65, 108,404.33 and 44,569.89

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Solution

The fourth proportional to 78,559.65, 108,404.33 and 44,569.89 is: 61,501.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,559.65 : 108,404.33 = 44,569.89 : x
  2. Step 2: Convert to fraction form
    78,559.65/108,404.33 = 44,569.89/x
  3. Step 3: Cross multiply
    78,559.65x = 108,404.33 × 44,569.89
  4. Step 4: Simplify right side
    78,559.65x = 4,831,568,840.77
  5. Step 5: Solve for x
    x = 4,831,568,840.77/78,559.65
  6. Step 6: Final answer
    x = 61,501.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.