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Finding the Fourth Proportional to 98,469.20, 147,725.40 and 48,573.20

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Solution

The fourth proportional to 98,469.20, 147,725.40 and 48,573.20 is: 72,870.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,469.20 : 147,725.40 = 48,573.20 : x
  2. Step 2: Convert to fraction form
    98,469.20/147,725.40 = 48,573.20/x
  3. Step 3: Cross multiply
    98,469.20x = 147,725.40 × 48,573.20
  4. Step 4: Simplify right side
    98,469.20x = 7,175,495,399.28
  5. Step 5: Solve for x
    x = 7,175,495,399.28/98,469.20
  6. Step 6: Final answer
    x = 72,870.45

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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.