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Finding the Fourth Proportional to 346,809.20, 520,213.80 and 97,458.80

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Solution

The fourth proportional to 346,809.20, 520,213.80 and 97,458.80 is: 146,188.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,809.20 : 520,213.80 = 97,458.80 : x
  2. Step 2: Convert to fraction form
    346,809.20/520,213.80 = 97,458.80/x
  3. Step 3: Cross multiply
    346,809.20x = 520,213.80 × 97,458.80
  4. Step 4: Simplify right side
    346,809.20x = 50,699,412,691.44
  5. Step 5: Solve for x
    x = 50,699,412,691.44/346,809.20
  6. Step 6: Final answer
    x = 146,188.20

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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.