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Finding the Fourth Proportional to 346,886.20, 520,343.70 and 110,222.20

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Solution

The fourth proportional to 346,886.20, 520,343.70 and 110,222.20 is: 165,337.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,886.20 : 520,343.70 = 110,222.20 : x
  2. Step 2: Convert to fraction form
    346,886.20/520,343.70 = 110,222.20/x
  3. Step 3: Cross multiply
    346,886.20x = 520,343.70 × 110,222.20
  4. Step 4: Simplify right side
    346,886.20x = 57,353,427,370.14
  5. Step 5: Solve for x
    x = 57,353,427,370.14/346,886.20
  6. Step 6: Final answer
    x = 165,337.88

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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.