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Finding the Fourth Proportional to 640,003.68, 883,188.36 and 353,477.52

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Solution

The fourth proportional to 640,003.68, 883,188.36 and 353,477.52 is: 487,789.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,003.68 : 883,188.36 = 353,477.52 : x
  2. Step 2: Convert to fraction form
    640,003.68/883,188.36 = 353,477.52/x
  3. Step 3: Cross multiply
    640,003.68x = 883,188.36 × 353,477.52
  4. Step 4: Simplify right side
    640,003.68x = 312,187,231,185.67
  5. Step 5: Solve for x
    x = 312,187,231,185.67/640,003.68
  6. Step 6: Final answer
    x = 487,789.74

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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.