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Finding the Fourth Proportional to 346,698.20, 520,047.30 and 84,042.20

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Solution

The fourth proportional to 346,698.20, 520,047.30 and 84,042.20 is: 126,063.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,698.20 : 520,047.30 = 84,042.20 : x
  2. Step 2: Convert to fraction form
    346,698.20/520,047.30 = 84,042.20/x
  3. Step 3: Cross multiply
    346,698.20x = 520,047.30 × 84,042.20
  4. Step 4: Simplify right side
    346,698.20x = 43,705,919,196.06
  5. Step 5: Solve for x
    x = 43,705,919,196.06/346,698.20
  6. Step 6: Final answer
    x = 126,063.30

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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.