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Finding the Fourth Proportional to 285,275.89, 393,693.03 and 157,951.49

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Solution

The fourth proportional to 285,275.89, 393,693.03 and 157,951.49 is: 217,979.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,275.89 : 393,693.03 = 157,951.49 : x
  2. Step 2: Convert to fraction form
    285,275.89/393,693.03 = 157,951.49/x
  3. Step 3: Cross multiply
    285,275.89x = 393,693.03 × 157,951.49
  4. Step 4: Simplify right side
    285,275.89x = 62,184,399,901.36
  5. Step 5: Solve for x
    x = 62,184,399,901.36/285,275.89
  6. Step 6: Final answer
    x = 217,979.87

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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.