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Finding the Fourth Proportional to 346,543.80, 519,891.30 and 196,855.80

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Solution

The fourth proportional to 346,543.80, 519,891.30 and 196,855.80 is: 295,326.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,543.80 : 519,891.30 = 196,855.80 : x
  2. Step 2: Convert to fraction form
    346,543.80/519,891.30 = 196,855.80/x
  3. Step 3: Cross multiply
    346,543.80x = 519,891.30 × 196,855.80
  4. Step 4: Simplify right side
    346,543.80x = 102,343,617,774.54
  5. Step 5: Solve for x
    x = 102,343,617,774.54/346,543.80
  6. Step 6: Final answer
    x = 295,326.64

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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.