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Finding the Fourth Proportional to 98,442.03, 146,894.87 and 87,839.03

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Solution

The fourth proportional to 98,442.03, 146,894.87 and 87,839.03 is: 131,073.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,442.03 : 146,894.87 = 87,839.03 : x
  2. Step 2: Convert to fraction form
    98,442.03/146,894.87 = 87,839.03/x
  3. Step 3: Cross multiply
    98,442.03x = 146,894.87 × 87,839.03
  4. Step 4: Simplify right side
    98,442.03x = 12,903,102,985.52
  5. Step 5: Solve for x
    x = 12,903,102,985.52/98,442.03
  6. Step 6: Final answer
    x = 131,073.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.