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Finding the Fourth Proportional to 345,485.68, 518,228.52 and 197,638

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Solution

The fourth proportional to 345,485.68, 518,228.52 and 197,638 is: 296,457.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,485.68 : 518,228.52 = 197,638 : x
  2. Step 2: Convert to fraction form
    345,485.68/518,228.52 = 197,638/x
  3. Step 3: Cross multiply
    345,485.68x = 518,228.52 × 197,638
  4. Step 4: Simplify right side
    345,485.68x = 102,421,648,235.76
  5. Step 5: Solve for x
    x = 102,421,648,235.76/345,485.68
  6. Step 6: Final answer
    x = 296,457.00

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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.