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Finding the Fourth Proportional to 425,458.51, 587,124.86 and 231,867.77

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Solution

The fourth proportional to 425,458.51, 587,124.86 and 231,867.77 is: 319,973.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,458.51 : 587,124.86 = 231,867.77 : x
  2. Step 2: Convert to fraction form
    425,458.51/587,124.86 = 231,867.77/x
  3. Step 3: Cross multiply
    425,458.51x = 587,124.86 × 231,867.77
  4. Step 4: Simplify right side
    425,458.51x = 136,135,327,904.80
  5. Step 5: Solve for x
    x = 136,135,327,904.80/425,458.51
  6. Step 6: Final answer
    x = 319,973.22

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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.