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Finding the Fourth Proportional to 285,254.96, 393,666.36 and 157,944.56

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Solution

The fourth proportional to 285,254.96, 393,666.36 and 157,944.56 is: 217,971.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,254.96 : 393,666.36 = 157,944.56 : x
  2. Step 2: Convert to fraction form
    285,254.96/393,666.36 = 157,944.56/x
  3. Step 3: Cross multiply
    285,254.96x = 393,666.36 × 157,944.56
  4. Step 4: Simplify right side
    285,254.96x = 62,177,460,017.00
  5. Step 5: Solve for x
    x = 62,177,460,017.00/285,254.96
  6. Step 6: Final answer
    x = 217,971.53

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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.