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Finding the Fourth Proportional to 684,861, 945,111.86 and 383,054.92

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Solution

The fourth proportional to 684,861, 945,111.86 and 383,054.92 is: 528,617.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,861 : 945,111.86 = 383,054.92 : x
  2. Step 2: Convert to fraction form
    684,861/945,111.86 = 383,054.92/x
  3. Step 3: Cross multiply
    684,861x = 945,111.86 × 383,054.92
  4. Step 4: Simplify right side
    684,861x = 362,029,747,923.35
  5. Step 5: Solve for x
    x = 362,029,747,923.35/684,861
  6. Step 6: Final answer
    x = 528,617.85

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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.