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Finding the Fourth Proportional to 630,838.11, 870,539.85 and 580,055.97

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Solution

The fourth proportional to 630,838.11, 870,539.85 and 580,055.97 is: 800,461.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,838.11 : 870,539.85 = 580,055.97 : x
  2. Step 2: Convert to fraction form
    630,838.11/870,539.85 = 580,055.97/x
  3. Step 3: Cross multiply
    630,838.11x = 870,539.85 × 580,055.97
  4. Step 4: Simplify right side
    630,838.11x = 504,961,837,115.41
  5. Step 5: Solve for x
    x = 504,961,837,115.41/630,838.11
  6. Step 6: Final answer
    x = 800,461.84

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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.