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Finding the Fourth Proportional to 639,130.23, 881,997.39 and 352,648.89

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Solution

The fourth proportional to 639,130.23, 881,997.39 and 352,648.89 is: 486,654.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,130.23 : 881,997.39 = 352,648.89 : x
  2. Step 2: Convert to fraction form
    639,130.23/881,997.39 = 352,648.89/x
  3. Step 3: Cross multiply
    639,130.23x = 881,997.39 × 352,648.89
  4. Step 4: Simplify right side
    639,130.23x = 311,035,400,566.40
  5. Step 5: Solve for x
    x = 311,035,400,566.40/639,130.23
  6. Step 6: Final answer
    x = 486,654.18

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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.