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Finding the Fourth Proportional to 71,567.96, 98,764.20 and 39,303.96

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Solution

The fourth proportional to 71,567.96, 98,764.20 and 39,303.96 is: 54,239.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,567.96 : 98,764.20 = 39,303.96 : x
  2. Step 2: Convert to fraction form
    71,567.96/98,764.20 = 39,303.96/x
  3. Step 3: Cross multiply
    71,567.96x = 98,764.20 × 39,303.96
  4. Step 4: Simplify right side
    71,567.96x = 3,881,824,166.23
  5. Step 5: Solve for x
    x = 3,881,824,166.23/71,567.96
  6. Step 6: Final answer
    x = 54,239.69

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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.