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Finding the Fourth Proportional to 346,811.20, 520,216.80 and 97,493.20

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Solution

The fourth proportional to 346,811.20, 520,216.80 and 97,493.20 is: 146,239.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,811.20 : 520,216.80 = 97,493.20 : x
  2. Step 2: Convert to fraction form
    346,811.20/520,216.80 = 97,493.20/x
  3. Step 3: Cross multiply
    346,811.20x = 520,216.80 × 97,493.20
  4. Step 4: Simplify right side
    346,811.20x = 50,717,600,525.76
  5. Step 5: Solve for x
    x = 50,717,600,525.76/346,811.20
  6. Step 6: Final answer
    x = 146,239.80

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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.