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Finding the Fourth Proportional to 713,662.88, 984,764.25 and 391,288.14

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Solution

The fourth proportional to 713,662.88, 984,764.25 and 391,288.14 is: 539,928.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,662.88 : 984,764.25 = 391,288.14 : x
  2. Step 2: Convert to fraction form
    713,662.88/984,764.25 = 391,288.14/x
  3. Step 3: Cross multiply
    713,662.88x = 984,764.25 × 391,288.14
  4. Step 4: Simplify right side
    713,662.88x = 385,326,571,721.00
  5. Step 5: Solve for x
    x = 385,326,571,721.00/713,662.88
  6. Step 6: Final answer
    x = 539,928.00

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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.