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Finding the Fourth Proportional to 518,340.88, 777,861.64 and 181,384.45

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Solution

The fourth proportional to 518,340.88, 777,861.64 and 181,384.45 is: 272,199.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,340.88 : 777,861.64 = 181,384.45 : x
  2. Step 2: Convert to fraction form
    518,340.88/777,861.64 = 181,384.45/x
  3. Step 3: Cross multiply
    518,340.88x = 777,861.64 × 181,384.45
  4. Step 4: Simplify right side
    518,340.88x = 141,092,004,840.58
  5. Step 5: Solve for x
    x = 141,092,004,840.58/518,340.88
  6. Step 6: Final answer
    x = 272,199.26

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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.