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Finding the Fourth Proportional to 285,215.92, 393,601.08 and 157,893.76

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Solution

The fourth proportional to 285,215.92, 393,601.08 and 157,893.76 is: 217,895.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,215.92 : 393,601.08 = 157,893.76 : x
  2. Step 2: Convert to fraction form
    285,215.92/393,601.08 = 157,893.76/x
  3. Step 3: Cross multiply
    285,215.92x = 393,601.08 × 157,893.76
  4. Step 4: Simplify right side
    285,215.92x = 62,147,154,461.26
  5. Step 5: Solve for x
    x = 62,147,154,461.26/285,215.92
  6. Step 6: Final answer
    x = 217,895.11

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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.