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Finding the Fourth Proportional to 640,314.06, 883,633.72 and 353,834.16

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Solution

The fourth proportional to 640,314.06, 883,633.72 and 353,834.16 is: 488,291.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,314.06 : 883,633.72 = 353,834.16 : x
  2. Step 2: Convert to fraction form
    640,314.06/883,633.72 = 353,834.16/x
  3. Step 3: Cross multiply
    640,314.06x = 883,633.72 × 353,834.16
  4. Step 4: Simplify right side
    640,314.06x = 312,659,795,063.88
  5. Step 5: Solve for x
    x = 312,659,795,063.88/640,314.06
  6. Step 6: Final answer
    x = 488,291.32

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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.