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Finding the Fourth Proportional to 640,199.24, 883,451.14 and 353,713.16

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Solution

The fourth proportional to 640,199.24, 883,451.14 and 353,713.16 is: 488,111.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,199.24 : 883,451.14 = 353,713.16 : x
  2. Step 2: Convert to fraction form
    640,199.24/883,451.14 = 353,713.16/x
  3. Step 3: Cross multiply
    640,199.24x = 883,451.14 × 353,713.16
  4. Step 4: Simplify right side
    640,199.24x = 312,488,294,435.00
  5. Step 5: Solve for x
    x = 312,488,294,435.00/640,199.24
  6. Step 6: Final answer
    x = 488,111.00

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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.