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Finding the Fourth Proportional to 287,659.57, 431,594.55 and 133,858.91

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Solution

The fourth proportional to 287,659.57, 431,594.55 and 133,858.91 is: 200,837.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,659.57 : 431,594.55 = 133,858.91 : x
  2. Step 2: Convert to fraction form
    287,659.57/431,594.55 = 133,858.91/x
  3. Step 3: Cross multiply
    287,659.57x = 431,594.55 × 133,858.91
  4. Step 4: Simplify right side
    287,659.57x = 57,772,773,866.97
  5. Step 5: Solve for x
    x = 57,772,773,866.97/287,659.57
  6. Step 6: Final answer
    x = 200,837.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.