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Finding the Fourth Proportional to 346,426.80, 519,640.20 and 196,609.20

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Solution

The fourth proportional to 346,426.80, 519,640.20 and 196,609.20 is: 294,913.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,426.80 : 519,640.20 = 196,609.20 : x
  2. Step 2: Convert to fraction form
    346,426.80/519,640.20 = 196,609.20/x
  3. Step 3: Cross multiply
    346,426.80x = 519,640.20 × 196,609.20
  4. Step 4: Simplify right side
    346,426.80x = 102,166,044,009.84
  5. Step 5: Solve for x
    x = 102,166,044,009.84/346,426.80
  6. Step 6: Final answer
    x = 294,913.80

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Similar ratio
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1.5x scale

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.