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Finding the Fourth Proportional to 293,219.20, 439,310.40 and 260,041.60

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Solution

The fourth proportional to 293,219.20, 439,310.40 and 260,041.60 is: 389,602.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,219.20 : 439,310.40 = 260,041.60 : x
  2. Step 2: Convert to fraction form
    293,219.20/439,310.40 = 260,041.60/x
  3. Step 3: Cross multiply
    293,219.20x = 439,310.40 × 260,041.60
  4. Step 4: Simplify right side
    293,219.20x = 114,238,979,312.64
  5. Step 5: Solve for x
    x = 114,238,979,312.64/293,219.20
  6. Step 6: Final answer
    x = 389,602.66

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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.