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Finding the Fourth Proportional to 713,796.84, 985,044.48 and 391,509.24

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Solution

The fourth proportional to 713,796.84, 985,044.48 and 391,509.24 is: 540,285.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,796.84 : 985,044.48 = 391,509.24 : x
  2. Step 2: Convert to fraction form
    713,796.84/985,044.48 = 391,509.24/x
  3. Step 3: Cross multiply
    713,796.84x = 985,044.48 × 391,509.24
  4. Step 4: Simplify right side
    713,796.84x = 385,654,015,731.00
  5. Step 5: Solve for x
    x = 385,654,015,731.00/713,796.84
  6. Step 6: Final answer
    x = 540,285.41

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Similar ratio
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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.