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Finding the Fourth Proportional to 656,390.88, 906,044.40 and 384,546.24

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Solution

The fourth proportional to 656,390.88, 906,044.40 and 384,546.24 is: 530,805.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,390.88 : 906,044.40 = 384,546.24 : x
  2. Step 2: Convert to fraction form
    656,390.88/906,044.40 = 384,546.24/x
  3. Step 3: Cross multiply
    656,390.88x = 906,044.40 × 384,546.24
  4. Step 4: Simplify right side
    656,390.88x = 348,415,967,293.06
  5. Step 5: Solve for x
    x = 348,415,967,293.06/656,390.88
  6. Step 6: Final answer
    x = 530,805.62

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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.