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Finding the Fourth Proportional to 402,606.66, 603,913.63 and 122,123.91

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Solution

The fourth proportional to 402,606.66, 603,913.63 and 122,123.91 is: 183,186.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,606.66 : 603,913.63 = 122,123.91 : x
  2. Step 2: Convert to fraction form
    402,606.66/603,913.63 = 122,123.91/x
  3. Step 3: Cross multiply
    402,606.66x = 603,913.63 × 122,123.91
  4. Step 4: Simplify right side
    402,606.66x = 73,752,291,685.87
  5. Step 5: Solve for x
    x = 73,752,291,685.87/402,606.66
  6. Step 6: Final answer
    x = 183,186.97

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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.