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Finding the Fourth Proportional to 209,801.41, 314,976.52 and 124,567.87

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Solution

The fourth proportional to 209,801.41, 314,976.52 and 124,567.87 is: 187,014.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,801.41 : 314,976.52 = 124,567.87 : x
  2. Step 2: Convert to fraction form
    209,801.41/314,976.52 = 124,567.87/x
  3. Step 3: Cross multiply
    209,801.41x = 314,976.52 × 124,567.87
  4. Step 4: Simplify right side
    209,801.41x = 39,235,953,097.55
  5. Step 5: Solve for x
    x = 39,235,953,097.55/209,801.41
  6. Step 6: Final answer
    x = 187,014.72

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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.