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Finding the Fourth Proportional to 285,217.70, 393,600.51 and 157,893.28

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Solution

The fourth proportional to 285,217.70, 393,600.51 and 157,893.28 is: 217,892.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,217.70 : 393,600.51 = 157,893.28 : x
  2. Step 2: Convert to fraction form
    285,217.70/393,600.51 = 157,893.28/x
  3. Step 3: Cross multiply
    285,217.70x = 393,600.51 × 157,893.28
  4. Step 4: Simplify right side
    285,217.70x = 62,146,874,549.57
  5. Step 5: Solve for x
    x = 62,146,874,549.57/285,217.70
  6. Step 6: Final answer
    x = 217,892.77

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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.