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Finding the Fourth Proportional to 104,091.60, 143,524.80 and 98,486.40

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Solution

The fourth proportional to 104,091.60, 143,524.80 and 98,486.40 is: 135,796.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,091.60 : 143,524.80 = 98,486.40 : x
  2. Step 2: Convert to fraction form
    104,091.60/143,524.80 = 98,486.40/x
  3. Step 3: Cross multiply
    104,091.60x = 143,524.80 × 98,486.40
  4. Step 4: Simplify right side
    104,091.60x = 14,135,240,862.72
  5. Step 5: Solve for x
    x = 14,135,240,862.72/104,091.60
  6. Step 6: Final answer
    x = 135,796.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.