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Finding the Fourth Proportional to 519,864.40, 778,484.40 and 341,405.20

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Solution

The fourth proportional to 519,864.40, 778,484.40 and 341,405.20 is: 511,246.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,864.40 : 778,484.40 = 341,405.20 : x
  2. Step 2: Convert to fraction form
    519,864.40/778,484.40 = 341,405.20/x
  3. Step 3: Cross multiply
    519,864.40x = 778,484.40 × 341,405.20
  4. Step 4: Simplify right side
    519,864.40x = 265,778,622,278.88
  5. Step 5: Solve for x
    x = 265,778,622,278.88/519,864.40
  6. Step 6: Final answer
    x = 511,246.05

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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.