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Finding the Fourth Proportional to 640,653.63, 883,955.33 and 382,480.33

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Solution

The fourth proportional to 640,653.63, 883,955.33 and 382,480.33 is: 527,735.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,653.63 : 883,955.33 = 382,480.33 : x
  2. Step 2: Convert to fraction form
    640,653.63/883,955.33 = 382,480.33/x
  3. Step 3: Cross multiply
    640,653.63x = 883,955.33 × 382,480.33
  4. Step 4: Simplify right side
    640,653.63x = 338,095,525,293.09
  5. Step 5: Solve for x
    x = 338,095,525,293.09/640,653.63
  6. Step 6: Final answer
    x = 527,735.28

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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.