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Finding the Fourth Proportional to 640,300.27, 883,537.45 and 353,781.13

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Solution

The fourth proportional to 640,300.27, 883,537.45 and 353,781.13 is: 488,175.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,300.27 : 883,537.45 = 353,781.13 : x
  2. Step 2: Convert to fraction form
    640,300.27/883,537.45 = 353,781.13/x
  3. Step 3: Cross multiply
    640,300.27x = 883,537.45 × 353,781.13
  4. Step 4: Simplify right side
    640,300.27x = 312,578,877,458.32
  5. Step 5: Solve for x
    x = 312,578,877,458.32/640,300.27
  6. Step 6: Final answer
    x = 488,175.46

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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.