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Finding the Fourth Proportional to 98,456.50, 146,916.46 and 87,853.60

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Solution

The fourth proportional to 98,456.50, 146,916.46 and 87,853.60 is: 131,094.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,456.50 : 146,916.46 = 87,853.60 : x
  2. Step 2: Convert to fraction form
    98,456.50/146,916.46 = 87,853.60/x
  3. Step 3: Cross multiply
    98,456.50x = 146,916.46 × 87,853.60
  4. Step 4: Simplify right side
    98,456.50x = 12,907,139,910.26
  5. Step 5: Solve for x
    x = 12,907,139,910.26/98,456.50
  6. Step 6: Final answer
    x = 131,094.85

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1.5x scale

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.