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Finding the Fourth Proportional to 713,157.10, 984,011.35 and 422,640.61

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Solution

The fourth proportional to 713,157.10, 984,011.35 and 422,640.61 is: 583,157.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,157.10 : 984,011.35 = 422,640.61 : x
  2. Step 2: Convert to fraction form
    713,157.10/984,011.35 = 422,640.61/x
  3. Step 3: Cross multiply
    713,157.10x = 984,011.35 × 422,640.61
  4. Step 4: Simplify right side
    713,157.10x = 415,883,157,210.92
  5. Step 5: Solve for x
    x = 415,883,157,210.92/713,157.10
  6. Step 6: Final answer
    x = 583,157.84

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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.