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Finding the Fourth Proportional to 372,805.70, 514,477.72 and 203,039.70

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Solution

The fourth proportional to 372,805.70, 514,477.72 and 203,039.70 is: 280,197.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,805.70 : 514,477.72 = 203,039.70 : x
  2. Step 2: Convert to fraction form
    372,805.70/514,477.72 = 203,039.70/x
  3. Step 3: Cross multiply
    372,805.70x = 514,477.72 × 203,039.70
  4. Step 4: Simplify right side
    372,805.70x = 104,459,401,925.48
  5. Step 5: Solve for x
    x = 104,459,401,925.48/372,805.70
  6. Step 6: Final answer
    x = 280,197.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.