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Finding the Fourth Proportional to 140,894.80, 210,991.60 and 98,576.90

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Solution

The fourth proportional to 140,894.80, 210,991.60 and 98,576.90 is: 147,620.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,894.80 : 210,991.60 = 98,576.90 : x
  2. Step 2: Convert to fraction form
    140,894.80/210,991.60 = 98,576.90/x
  3. Step 3: Cross multiply
    140,894.80x = 210,991.60 × 98,576.90
  4. Step 4: Simplify right side
    140,894.80x = 20,798,897,854.04
  5. Step 5: Solve for x
    x = 20,798,897,854.04/140,894.80
  6. Step 6: Final answer
    x = 147,620.05

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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.