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Finding the Fourth Proportional to 381,364.49, 572,232.63 and 156,792.40

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Solution

The fourth proportional to 381,364.49, 572,232.63 and 156,792.40 is: 235,265.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,364.49 : 572,232.63 = 156,792.40 : x
  2. Step 2: Convert to fraction form
    381,364.49/572,232.63 = 156,792.40/x
  3. Step 3: Cross multiply
    381,364.49x = 572,232.63 × 156,792.40
  4. Step 4: Simplify right side
    381,364.49x = 89,721,727,416.01
  5. Step 5: Solve for x
    x = 89,721,727,416.01/381,364.49
  6. Step 6: Final answer
    x = 235,265.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.