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Finding the Fourth Proportional to 98,360.40, 147,321.90 and 76,101.60

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Solution

The fourth proportional to 98,360.40, 147,321.90 and 76,101.60 is: 113,983.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,360.40 : 147,321.90 = 76,101.60 : x
  2. Step 2: Convert to fraction form
    98,360.40/147,321.90 = 76,101.60/x
  3. Step 3: Cross multiply
    98,360.40x = 147,321.90 × 76,101.60
  4. Step 4: Simplify right side
    98,360.40x = 11,211,432,305.04
  5. Step 5: Solve for x
    x = 11,211,432,305.04/98,360.40
  6. Step 6: Final answer
    x = 113,983.19

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1.5x scale

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.