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Finding the Fourth Proportional to 425,418.92, 587,070.54 and 231,828.32

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Solution

The fourth proportional to 425,418.92, 587,070.54 and 231,828.32 is: 319,918.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,418.92 : 587,070.54 = 231,828.32 : x
  2. Step 2: Convert to fraction form
    425,418.92/587,070.54 = 231,828.32/x
  3. Step 3: Cross multiply
    425,418.92x = 587,070.54 × 231,828.32
  4. Step 4: Simplify right side
    425,418.92x = 136,099,577,009.69
  5. Step 5: Solve for x
    x = 136,099,577,009.69/425,418.92
  6. Step 6: Final answer
    x = 319,918.96

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1.5x scale

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.