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Finding the Fourth Proportional to 98,530.20, 147,795.30 and 67,037.40

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Solution

The fourth proportional to 98,530.20, 147,795.30 and 67,037.40 is: 100,556.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,530.20 : 147,795.30 = 67,037.40 : x
  2. Step 2: Convert to fraction form
    98,530.20/147,795.30 = 67,037.40/x
  3. Step 3: Cross multiply
    98,530.20x = 147,795.30 × 67,037.40
  4. Step 4: Simplify right side
    98,530.20x = 9,907,812,644.22
  5. Step 5: Solve for x
    x = 9,907,812,644.22/98,530.20
  6. Step 6: Final answer
    x = 100,556.10

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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.