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Finding the Fourth Proportional to 98,611.40, 147,938.70 and 32,040.20

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Solution

The fourth proportional to 98,611.40, 147,938.70 and 32,040.20 is: 48,067.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,611.40 : 147,938.70 = 32,040.20 : x
  2. Step 2: Convert to fraction form
    98,611.40/147,938.70 = 32,040.20/x
  3. Step 3: Cross multiply
    98,611.40x = 147,938.70 × 32,040.20
  4. Step 4: Simplify right side
    98,611.40x = 4,739,985,535.74
  5. Step 5: Solve for x
    x = 4,739,985,535.74/98,611.40
  6. Step 6: Final answer
    x = 48,067.32

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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.