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Finding the Fourth Proportional to 286,706.67, 395,665.35 and 157,654.96

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Solution

The fourth proportional to 286,706.67, 395,665.35 and 157,654.96 is: 217,569.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,706.67 : 395,665.35 = 157,654.96 : x
  2. Step 2: Convert to fraction form
    286,706.67/395,665.35 = 157,654.96/x
  3. Step 3: Cross multiply
    286,706.67x = 395,665.35 × 157,654.96
  4. Step 4: Simplify right side
    286,706.67x = 62,378,604,927.64
  5. Step 5: Solve for x
    x = 62,378,604,927.64/286,706.67
  6. Step 6: Final answer
    x = 217,569.42

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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.