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Finding the Fourth Proportional to 79,293.54, 118,921.91 and 47,281.55

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Solution

The fourth proportional to 79,293.54, 118,921.91 and 47,281.55 is: 70,911.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,293.54 : 118,921.91 = 47,281.55 : x
  2. Step 2: Convert to fraction form
    79,293.54/118,921.91 = 47,281.55/x
  3. Step 3: Cross multiply
    79,293.54x = 118,921.91 × 47,281.55
  4. Step 4: Simplify right side
    79,293.54x = 5,622,812,294.66
  5. Step 5: Solve for x
    x = 5,622,812,294.66/79,293.54
  6. Step 6: Final answer
    x = 70,911.35

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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.