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Finding the Fourth Proportional to 353,686.86, 488,082.78 and 192,543.12

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Solution

The fourth proportional to 353,686.86, 488,082.78 and 192,543.12 is: 265,706.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,686.86 : 488,082.78 = 192,543.12 : x
  2. Step 2: Convert to fraction form
    353,686.86/488,082.78 = 192,543.12/x
  3. Step 3: Cross multiply
    353,686.86x = 488,082.78 × 192,543.12
  4. Step 4: Simplify right side
    353,686.86x = 93,976,981,279.47
  5. Step 5: Solve for x
    x = 93,976,981,279.47/353,686.86
  6. Step 6: Final answer
    x = 265,706.74

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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.