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Finding the Fourth Proportional to 346,692.80, 520,039.20 and 196,875.20

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Solution

The fourth proportional to 346,692.80, 520,039.20 and 196,875.20 is: 295,312.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,692.80 : 520,039.20 = 196,875.20 : x
  2. Step 2: Convert to fraction form
    346,692.80/520,039.20 = 196,875.20/x
  3. Step 3: Cross multiply
    346,692.80x = 520,039.20 × 196,875.20
  4. Step 4: Simplify right side
    346,692.80x = 102,382,821,507.84
  5. Step 5: Solve for x
    x = 102,382,821,507.84/346,692.80
  6. Step 6: Final answer
    x = 295,312.80

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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.