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Finding the Fourth Proportional to 78,962.98, 118,395.87 and 26,358.34

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Solution

The fourth proportional to 78,962.98, 118,395.87 and 26,358.34 is: 39,521.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,962.98 : 118,395.87 = 26,358.34 : x
  2. Step 2: Convert to fraction form
    78,962.98/118,395.87 = 26,358.34/x
  3. Step 3: Cross multiply
    78,962.98x = 118,395.87 × 26,358.34
  4. Step 4: Simplify right side
    78,962.98x = 3,120,718,596.06
  5. Step 5: Solve for x
    x = 3,120,718,596.06/78,962.98
  6. Step 6: Final answer
    x = 39,521.29

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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.