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Finding the Fourth Proportional to 346,540.55, 519,810.48 and 130,439.64

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Solution

The fourth proportional to 346,540.55, 519,810.48 and 130,439.64 is: 195,659.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,540.55 : 519,810.48 = 130,439.64 : x
  2. Step 2: Convert to fraction form
    346,540.55/519,810.48 = 130,439.64/x
  3. Step 3: Cross multiply
    346,540.55x = 519,810.48 × 130,439.64
  4. Step 4: Simplify right side
    346,540.55x = 67,803,891,879.43
  5. Step 5: Solve for x
    x = 67,803,891,879.43/346,540.55
  6. Step 6: Final answer
    x = 195,659.33

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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.