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Finding the Fourth Proportional to 285,065.92, 393,385.17 and 157,741.48

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Solution

The fourth proportional to 285,065.92, 393,385.17 and 157,741.48 is: 217,680.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,065.92 : 393,385.17 = 157,741.48 : x
  2. Step 2: Convert to fraction form
    285,065.92/393,385.17 = 157,741.48/x
  3. Step 3: Cross multiply
    285,065.92x = 393,385.17 × 157,741.48
  4. Step 4: Simplify right side
    285,065.92x = 62,053,158,925.85
  5. Step 5: Solve for x
    x = 62,053,158,925.85/285,065.92
  6. Step 6: Final answer
    x = 217,680.03

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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.