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Finding the Fourth Proportional to 368,447.07, 508,420.66 and 207,298.56

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Solution

The fourth proportional to 368,447.07, 508,420.66 and 207,298.56 is: 286,051.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,447.07 : 508,420.66 = 207,298.56 : x
  2. Step 2: Convert to fraction form
    368,447.07/508,420.66 = 207,298.56/x
  3. Step 3: Cross multiply
    368,447.07x = 508,420.66 × 207,298.56
  4. Step 4: Simplify right side
    368,447.07x = 105,394,867,113.65
  5. Step 5: Solve for x
    x = 105,394,867,113.65/368,447.07
  6. Step 6: Final answer
    x = 286,051.59

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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.