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Finding the Fourth Proportional to 640,053.59, 883,241.46 and 353,518.31

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Solution

The fourth proportional to 640,053.59, 883,241.46 and 353,518.31 is: 487,837.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,053.59 : 883,241.46 = 353,518.31 : x
  2. Step 2: Convert to fraction form
    640,053.59/883,241.46 = 353,518.31/x
  3. Step 3: Cross multiply
    640,053.59x = 883,241.46 × 353,518.31
  4. Step 4: Simplify right side
    640,053.59x = 312,242,023,844.93
  5. Step 5: Solve for x
    x = 312,242,023,844.93/640,053.59
  6. Step 6: Final answer
    x = 487,837.32

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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.