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Finding the Fourth Proportional to 286,706.56, 395,665.20 and 157,654.82

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Solution

The fourth proportional to 286,706.56, 395,665.20 and 157,654.82 is: 217,569.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,706.56 : 395,665.20 = 157,654.82 : x
  2. Step 2: Convert to fraction form
    286,706.56/395,665.20 = 157,654.82/x
  3. Step 3: Cross multiply
    286,706.56x = 395,665.20 × 157,654.82
  4. Step 4: Simplify right side
    286,706.56x = 62,378,525,886.26
  5. Step 5: Solve for x
    x = 62,378,525,886.26/286,706.56
  6. Step 6: Final answer
    x = 217,569.23

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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.