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Finding the Fourth Proportional to 713,456.35, 984,558.54 and 391,169.23

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Solution

The fourth proportional to 713,456.35, 984,558.54 and 391,169.23 is: 539,807.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,456.35 : 984,558.54 = 391,169.23 : x
  2. Step 2: Convert to fraction form
    713,456.35/984,558.54 = 391,169.23/x
  3. Step 3: Cross multiply
    713,456.35x = 984,558.54 × 391,169.23
  4. Step 4: Simplify right side
    713,456.35x = 385,129,005,981.72
  5. Step 5: Solve for x
    x = 385,129,005,981.72/713,456.35
  6. Step 6: Final answer
    x = 539,807.38

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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.